diff --git a/1-exercises/A-accessing-values/exercise1.js b/1-exercises/A-accessing-values/exercise1.js
index 67416c69..3a083099 100644
--- a/1-exercises/A-accessing-values/exercise1.js
+++ b/1-exercises/A-accessing-values/exercise1.js
@@ -5,10 +5,10 @@
 */
 
 let dog = {
-  breed: "Dalmatian",
-  name: "Spot",
-  isHungry: true,
-  happiness: 6
+  breed: "Dalmatian",  // string
+  name: "Spot",        // string
+  isHungry: true,      // boolean
+  happiness: 6         // number
 };
 
 /*
@@ -16,8 +16,8 @@ let dog = {
   Log the name and breed of this dog using dot notation.
 */
 
-let dogName; // complete the code
-let dogBreed; // complete the code
+let dogName = dog.name; // complete the code
+let dogBreed = dog.breed; // complete the code
 
 console.log(`${dogName} is a ${dogBreed}`);
 
diff --git a/1-exercises/A-accessing-values/exercise2.js b/1-exercises/A-accessing-values/exercise2.js
index 5b523ace..0227ddba 100644
--- a/1-exercises/A-accessing-values/exercise2.js
+++ b/1-exercises/A-accessing-values/exercise2.js
@@ -17,10 +17,12 @@ let capitalCities = {
 */
 
 let myCountry = "UnitedKingdom";
-let myCapitalCity; // complete the code
+//let myCapitalCity = capitalCities.UnitedKingdom;
+let myCapitalCity = capitalCities[myCountry]; // complete the code
 
 console.log(myCapitalCity);
 
+
 /* EXPECTED RESULT
 
   London
diff --git a/1-exercises/A-accessing-values/exercise3.js b/1-exercises/A-accessing-values/exercise3.js
index 2e160dd5..03b07d62 100644
--- a/1-exercises/A-accessing-values/exercise3.js
+++ b/1-exercises/A-accessing-values/exercise3.js
@@ -12,16 +12,15 @@ let basketballTeam = {
     address: "1901 W Madison St",
   },
 };
-
 /*
   Write code that
     - accesses the basketball team's top players array
     - sorts the top players in alphabetical order
     - console.logs the name of each player on a new line
 */
-
 // write code here
-
+let basketballTeamsTopPlayers = basketballTeam.topPlayers.sort().join("\n");
+console.log(basketballTeamsTopPlayers);
 
 /* EXPECTED RESULT
 
diff --git a/1-exercises/B-setting-values/exercise1.js b/1-exercises/B-setting-values/exercise1.js
index 7d0b05c5..14cbe3c5 100644
--- a/1-exercises/B-setting-values/exercise1.js
+++ b/1-exercises/B-setting-values/exercise1.js
@@ -12,18 +12,20 @@ let capitalCities = {
     name: "Beijing",
   }
 };
-
 /*
   Using dot notation:
     - Change the value of UnitedKingdom's capital city population to 8980000.
-    - Add the property for population to China's capital city and set the value to 21500000.
+    - Add the property for population to China's capital city and 
+                                              set the value to 21 500 000.
     - Add the country "Peru" to capitalCities object.
     - Add a name of "Lima" to Peru's capital city.
     - Add a population of 9750000 to Peru's capital city.
 */
-
 // write code here
-
+capitalCities.UnitedKingdom.population = 8980000;
+capitalCities.China.population = 21500000;
+let peru = {name: "Lima", population: 9750000};
+ capitalCities.Peru = peru;
 console.log(capitalCities);
 
 /* EXPECTED RESULT
diff --git a/1-exercises/B-setting-values/exercise2.js b/1-exercises/B-setting-values/exercise2.js
index 59fb7c1e..383be573 100644
--- a/1-exercises/B-setting-values/exercise2.js
+++ b/1-exercises/B-setting-values/exercise2.js
@@ -16,7 +16,7 @@ let student = {
 */
 
 // write code here
-
+student["attendance"] = 90;
 /*
   - Write an "if" statement that changes the value of hasPassed to true
       if the student has attendance that is equal or greater than 90
@@ -24,18 +24,17 @@ let student = {
       exam score is above 60.
   - Use bracket notation to change the value of hasPassed
 */
-
 // write code here
-
+if (student["attendance"] >= 90 && student["examScore"] > 60) {
+  student["hasPassed"] = true;
+}
 console.log(student);
 
 /* EXPECTED RESULT
-
   {
     name: "Reshma Saujani",
     examScore: 65,
     hasPassed: true,
     attendance: 90
   }
-
 */
\ No newline at end of file
diff --git a/1-exercises/C-undefined-properties/exercise.js b/1-exercises/C-undefined-properties/exercise.js
index 8b00f6ce..d34e5395 100644
--- a/1-exercises/C-undefined-properties/exercise.js
+++ b/1-exercises/C-undefined-properties/exercise.js
@@ -13,26 +13,25 @@ let car = {
   brand: "Ford",
   yearsOld: 8,
 };
-
 console.log(car["colour"]);
+// In object car there is no property - "colour"
 
 // Example 2
 function sayHelloToUser(user) {
   console.log(`Hello ${user.firstName}`);
 }
-
 let user = {
   name: "Mira"
 };
-
 sayHelloToUser(user);
+// the property of object is only one and called "name", not "firstName"
 
 // Example 3
 let myPet = {
   animal: "Cat",
   getName: function() {
-    "My pet's name is Fluffy";
+  "My pet's name is Fluffy";
   },
 };
-
 console.log(myPet.getName());
+// the getName is not a function , getName is property of object myPet
diff --git a/1-exercises/D-object-methods/exercise.js b/1-exercises/D-object-methods/exercise.js
index 0b57f2e1..59f1df14 100644
--- a/1-exercises/D-object-methods/exercise.js
+++ b/1-exercises/D-object-methods/exercise.js
@@ -9,8 +9,10 @@
 
 let student = {
   // write code here
-}
-
+  getName: function (name) {
+    console.log(`Student name: ${name}`);
+  }
+};
 student.getName("Daniel");
 
 /* EXPECTED RESULT
diff --git a/2-mandatory/1-recipes.js b/2-mandatory/1-recipes.js
index 6243fa9c..eb01713f 100644
--- a/2-mandatory/1-recipes.js
+++ b/2-mandatory/1-recipes.js
@@ -22,4 +22,68 @@
   You should write and log at least 5 recipes
 */
 
-// write code here
\ No newline at end of file
+// write code here
+console.log("\ ")
+// Recipe 1 Borshch
+let recipe1 = {
+  title: "Borsch",
+  servings: 75,
+  ingredients: [
+    "Cabbage -5kg",
+    "Potato -5kg",
+    "Carrot -3kg",
+    "Onion -1kg",
+    "Beetroot -1kg",
+    "Bean-2kg",
+    "Tomatoes-2kg",
+    "Vegetable oil - 200g",
+  ]
+};
+console.log("Recipe 1", " ", recipe1.title);
+console.log("Servings: ", recipe1.servings);
+console.log("Ingredients:", "\n", recipe1.ingredients.join("\n"));
+  console.log(`\ `);
+
+// Recipe 2 Pasta
+let recipe2 = {
+  title: "Pasta",
+  servings: 2,
+  ingredients: ["Pasta -300g", "Butter -20g","Water -1000g"]
+};
+console.log("Recipe 2", " ", recipe2.title);
+console.log("Servings: ", recipe2.servings);
+console.log("Ingredients:", "\n", recipe2.ingredients.join("\n"));
+ console.log(`\ `);
+
+// Recipe 3  Cake Kyiv
+let recipe3 = {
+  title: "Cake Kyiv",
+  servings: 5,
+  ingredients: ["Nuts-100g", "Eggs-3", "Butter-20g", "Flour-500g", "Sugar-10g", "Milk-200g"],
+};
+console.log("Recipe 3", " ", recipe3.title);
+console.log("Servings: ",recipe3.servings);
+console.log("Ingredients:", "\n", recipe3.ingredients.join("\n"));
+ console.log(`\ `);
+
+ // Recipe 4 Potato
+ let recipe4 = {
+   title: "Potato",
+   servings: 15,
+   ingredients: ["Potato -5kg", "Butter -500g", "Water -10l"]
+ };
+ console.log("Recipe 4", " ", recipe4.title);
+ console.log("Servings: ", recipe4.servings);
+ console.log("Ingredients:", "\n", recipe4.ingredients.join("\n"));
+ console.log(`\ `);
+
+ // Recipe 5
+ let recipe5 = {
+   title: "Latte",
+   servings: 75,
+   ingredients: ["Coffee -10kg", "Milk -5kg", "Water -10l"]
+ };
+ console.log("Recipe 5", " ", recipe5.title);
+ console.log("Servings: ", recipe5.servings);
+ console.log("Ingredients:", "\n", recipe5.ingredients.join("\n"));
+ console.log(`\ `);
diff --git a/2-mandatory/2-currency-code-lookup.js b/2-mandatory/2-currency-code-lookup.js
index 5fde14f1..a0d4f86f 100644
--- a/2-mandatory/2-currency-code-lookup.js
+++ b/2-mandatory/2-currency-code-lookup.js
@@ -19,6 +19,8 @@ const COUNTRY_CURRENCY_CODES = [
 
 function createLookup(countryCurrencyCodes) {
   // write code here
+  return Object.fromEntries(countryCurrencyCodes);
+  // The Object.fromEntries() static method transforms a list of key-value pairs into an object.
 }
 
 /* ======= TESTS - DO NOT MODIFY =====
diff --git a/2-mandatory/3-shopping-list.js b/2-mandatory/3-shopping-list.js
index d25cb366..0eb1a0b2 100644
--- a/2-mandatory/3-shopping-list.js
+++ b/2-mandatory/3-shopping-list.js
@@ -20,6 +20,15 @@ let pantry = {
 
 function createShoppingList(recipe) {
   // write code here
+  return {
+    name: recipe.name,
+    items: recipe.ingredients.filter(
+      (element) =>
+        pantry.fridgeContents.indexOf(element) === -1 &&
+        pantry.cupboardContents.indexOf(element) === -1
+    ),
+  };
+  // --
 }
 
 /* ======= TESTS - DO NOT MODIFY =====
diff --git a/2-mandatory/4-restaurant.js b/2-mandatory/4-restaurant.js
index d7b81eea..239eebc9 100644
--- a/2-mandatory/4-restaurant.js
+++ b/2-mandatory/4-restaurant.js
@@ -21,7 +21,20 @@ const MENU = {
 
 let cashRegister = {
   // write code here
-}
+  orderBurger: function (balance) {
+    if (balance - MENU.burger >= 0) {
+      balance -= MENU.burger;
+    }
+    return balance;
+  },
+  orderFalafel: function (balance) {
+    if (balance - MENU.falafel >= 0) {
+      balance -= MENU.falafel;
+    }
+    return balance;
+  }
+  // --
+};
 
 /* ======= TESTS - DO NOT MODIFY =====
 - To run the tests for this exercise, run `npm test -- --testPathPattern 4-restaurant.js`
diff --git a/3-extra/1-count-words.js b/3-extra/1-count-words.js
index 9d347ae5..152e42a6 100644
--- a/3-extra/1-count-words.js
+++ b/3-extra/1-count-words.js
@@ -27,7 +27,16 @@ function countWords(string) {
   const wordCount = {};
 
   // write code here
-
+ if (string.length) {
+   string
+     .split(" ")
+     .forEach((element) =>
+       wordCount.hasOwnProperty(element)
+         ? (wordCount[element] += 1)
+         : (wordCount[element] = 1)
+     );
+ }
+ // --
   return wordCount;
 }