diff --git a/1-exercises/A-accessing-values/exercise1.js b/1-exercises/A-accessing-values/exercise1.js
index 67416c69..dcf5a5ce 100644
--- a/1-exercises/A-accessing-values/exercise1.js
+++ b/1-exercises/A-accessing-values/exercise1.js
@@ -8,7 +8,7 @@ let dog = {
   breed: "Dalmatian",
   name: "Spot",
   isHungry: true,
-  happiness: 6
+  happiness: 6,
 };
 
 /*
@@ -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}`);
 
@@ -25,4 +25,4 @@ console.log(`${dogName} is a ${dogBreed}`);
 
   Spot is a Dalmatian
 
-*/
\ No newline at end of file
+*/
diff --git a/1-exercises/A-accessing-values/exercise2.js b/1-exercises/A-accessing-values/exercise2.js
index 5b523ace..02189d2b 100644
--- a/1-exercises/A-accessing-values/exercise2.js
+++ b/1-exercises/A-accessing-values/exercise2.js
@@ -7,7 +7,7 @@
 let capitalCities = {
   UnitedKingdom: "London",
   China: "Beijing",
-  Peru: "Lima"
+  Peru: "Lima",
 };
 
 /*
@@ -17,7 +17,7 @@ let capitalCities = {
 */
 
 let myCountry = "UnitedKingdom";
-let myCapitalCity; // complete the code
+let myCapitalCity = capitalCities[myCountry]; // complete the code
 
 console.log(myCapitalCity);
 
@@ -25,4 +25,4 @@ console.log(myCapitalCity);
 
   London
 
-*/
\ No newline at end of file
+*/
diff --git a/1-exercises/A-accessing-values/exercise3.js b/1-exercises/A-accessing-values/exercise3.js
index 2e160dd5..20c087c2 100644
--- a/1-exercises/A-accessing-values/exercise3.js
+++ b/1-exercises/A-accessing-values/exercise3.js
@@ -21,12 +21,20 @@ let basketballTeam = {
 */
 
 // write code here
+let b = basketballTeam.topPlayers;
+b.sort();
 
+b.forEach((b) => {
+  console.log(b);
+});
 
+// let topPlayers = basketballTeam.topPlayers;
+// topPlayers.sort();
+// topPlayers.map((player) => console.log(player));
 /* EXPECTED RESULT
 
   Dennis Rodman
   Michael Jordan
   Scottie Pippen
 
-*/
\ No newline at end of file
+*/
diff --git a/1-exercises/B-setting-values/exercise1.js b/1-exercises/B-setting-values/exercise1.js
index 7d0b05c5..21304f8d 100644
--- a/1-exercises/B-setting-values/exercise1.js
+++ b/1-exercises/B-setting-values/exercise1.js
@@ -10,7 +10,7 @@ let capitalCities = {
   },
   China: {
     name: "Beijing",
-  }
+  },
 };
 
 /*
@@ -23,6 +23,11 @@ let capitalCities = {
 */
 
 // write code here
+capitalCities.UnitedKingdom.population = 8980000;
+capitalCities.China.population = 21500000;
+capitalCities.Peru = {};
+capitalCities.Peru.name = "Lima";
+capitalCities.Peru.population = 9750000;
 
 console.log(capitalCities);
 
@@ -34,4 +39,4 @@ console.log(capitalCities);
     Peru: { name: "Lima", population: 9750000 }
   }
 
-*/
\ 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..deab3ce5 100644
--- a/1-exercises/C-undefined-properties/exercise.js
+++ b/1-exercises/C-undefined-properties/exercise.js
@@ -14,15 +14,15 @@ let car = {
   yearsOld: 8,
 };
 
-console.log(car["colour"]);
+console.log(car["colour"]); // we did,t define color in car object.
 
 // Example 2
 function sayHelloToUser(user) {
-  console.log(`Hello ${user.firstName}`);
+  console.log(`Hello ${user.firstName}`); // we don't have .firstname property for user , we have .name .
 }
 
 let user = {
-  name: "Mira"
+  name: "Mira",
 };
 
 sayHelloToUser(user);
@@ -30,8 +30,8 @@ sayHelloToUser(user);
 // Example 3
 let myPet = {
   animal: "Cat",
-  getName: function() {
-    "My pet's name is Fluffy";
+  getName: function () {
+    "My pet's name is Fluffy"; // Function defination isn't correct , } missing.
   },
 };
 
diff --git a/1-exercises/D-object-methods/exercise.js b/1-exercises/D-object-methods/exercise.js
index 0b57f2e1..bc02b8bf 100644
--- a/1-exercises/D-object-methods/exercise.js
+++ b/1-exercises/D-object-methods/exercise.js
@@ -8,8 +8,11 @@
 */
 
 let student = {
-  // write code here
-}
+  name: "Jack",
+  getName: function (name) {
+    console.log("Student name " + name);
+  }, // write code here
+};
 
 student.getName("Daniel");
 
@@ -17,4 +20,4 @@ student.getName("Daniel");
 
   Student name: Daniel
 
-*/
\ No newline at end of file
+*/
diff --git a/2-mandatory/1-recipes.js b/2-mandatory/1-recipes.js
index 6243fa9c..08ecc831 100644
--- a/2-mandatory/1-recipes.js
+++ b/2-mandatory/1-recipes.js
@@ -21,5 +21,42 @@
 
   You should write and log at least 5 recipes
 */
+let recipe1 = {
+  title: "Mole",
+  servings: 2,
+  ingredients: ["Cinnamon", "Cumin", "Cocoa"],
+};
 
-// write code here
\ No newline at end of file
+let recipe2 = {
+  title: "Mashed Potato",
+  servings: 3,
+  ingredients: ["potato", "water"],
+};
+
+let recipe3 = {
+  title: "Brownie",
+  servings: 4,
+  ingredients: ["flour", "cocoa", "milk", "suger", "butter"],
+};
+
+let recipe4 = {
+  title: "Kale salad",
+  servings: 5,
+  ingredients: ["kale", "lettuce"],
+};
+
+let recipe5 = {
+  title: "energy booster",
+  servings: 3,
+  ingredients: ["ginger", "orange", "lime"],
+};
+console.log(recipe1.title);
+console.log("Serving :", recipe1.servings);
+console.log("Ingredients:", recipe1.ingredients);
+// write code here
+// let b = basketballTeam.topPlayers;
+// b.sort();
+
+// b.forEach((b) => {
+//   console.log(b);
+// });
diff --git a/2-mandatory/2-currency-code-lookup.js b/2-mandatory/2-currency-code-lookup.js
index 5fde14f1..75c81e96 100644
--- a/2-mandatory/2-currency-code-lookup.js
+++ b/2-mandatory/2-currency-code-lookup.js
@@ -18,7 +18,11 @@ const COUNTRY_CURRENCY_CODES = [
 ];
 
 function createLookup(countryCurrencyCodes) {
-  // write code here
+  let countryObj = {};
+  for (let i = 0; i < countryCurrencyCodes.length; i++) {
+    countryObj[countryCurrencyCodes[i][0]] = countryCurrencyCodes[i][1];
+  }
+  return countryObj;
 }
 
 /* ======= TESTS - DO NOT MODIFY =====
@@ -34,4 +38,4 @@ test("creates country currency code lookup", () => {
     NG: "NGN",
     MX: "MXN",
   });
-});
\ No newline at end of file
+});
diff --git a/2-mandatory/3-shopping-list.js b/2-mandatory/3-shopping-list.js
index d25cb366..a0705996 100644
--- a/2-mandatory/3-shopping-list.js
+++ b/2-mandatory/3-shopping-list.js
@@ -19,7 +19,19 @@ let pantry = {
 };
 
 function createShoppingList(recipe) {
-  // write code here
+  const allIngredients = [...pantry.fridgeContents, ...pantry.cupboardContents];
+
+  const missingItems = recipe.ingredients.filter((ingredient) => {
+    if (allIngredients.includes(ingredient)) {
+      return false;
+    }
+    return true;
+  });
+  const objectToReturn = {
+    name: recipe.name,
+    items: missingItems,
+  };
+  return objectToReturn;
 }
 
 /* ======= TESTS - DO NOT MODIFY =====
@@ -43,11 +55,18 @@ test("createShoppingList works for pancakes recipe", () => {
 test("createShoppingList works for margherita pizza recipe", () => {
   let recipe2 = {
     name: "margherita pizza",
-    ingredients: ["flour", "salt", "yeast", "tinned tomatoes", "oregano", "mozarella"],
+    ingredients: [
+      "flour",
+      "salt",
+      "yeast",
+      "tinned tomatoes",
+      "oregano",
+      "mozarella",
+    ],
   };
 
   expect(createShoppingList(recipe2)).toEqual({
     name: "margherita pizza",
-    items: ["flour", "yeast", "mozarella"]
+    items: ["flour", "yeast", "mozarella"],
   });
-});
\ No newline at end of file
+});
diff --git a/2-mandatory/4-restaurant.js b/2-mandatory/4-restaurant.js
index d7b81eea..fb8ac29c 100644
--- a/2-mandatory/4-restaurant.js
+++ b/2-mandatory/4-restaurant.js
@@ -20,9 +20,22 @@ const MENU = {
 };
 
 let cashRegister = {
-  // write code here
-}
-
+  orderBurger: function (balance) {
+    let newBalance = balance;
+    if (balance >= MENU.burger) {
+      newBalance = balance - MENU.burger;
+    }
+    return newBalance;
+  },
+
+  orderFalafel: function (balance) {
+    let newBalance = balance;
+    if (balance >= MENU.falafel) {
+      newBalance = balance - MENU.falafel;
+    }
+    return newBalance;
+  },
+};
 /* ======= TESTS - DO NOT MODIFY =====
 - To run the tests for this exercise, run `npm test -- --testPathPattern 4-restaurant.js`
 - To run all exercises/tests in the mandatory folder, run `npm test`