diff --git a/mandatory/1-writers.js b/mandatory/1-writers.js
index 55dc10b9..6fc2f246 100644
--- a/mandatory/1-writers.js
+++ b/mandatory/1-writers.js
@@ -59,7 +59,9 @@ Exercise 1:
 
   "Hi, my name is {firstName} {lastName}. I am {age} years old, and work as a {occupation}."
 */
-
+for (i of writers) {
+	console.log(`Hi, my name is ${i.firstName} ${i.lastName}. I am ${i.age} years old, and work as a ${i.occupation}.`)
+};
 /*
 Exercise 2:
 
@@ -68,7 +70,11 @@ Exercise 2:
 
   "Writer {firstName} {lastName} died at {age} years old."
 */
-
+for (i of writers) {
+	if (i.age >= 40 && i.age < 50 && !i.alive) {
+		console.log(`Writer ${i.firstName} ${i.lastName} died at ${i.age} years old.`);
+	}
+};
 /*
 Exercise 3:
 
@@ -76,3 +82,8 @@ Exercise 3:
 
   "Hi, my name is {firstName} {lastName}. I am {age} years old."
 */
+for (i of writers) {
+	if (i.age >= 40 && i.age < 50 && i.alive) {
+		console.log(`Hi, my name is ${i.firstName} ${i.lastName}. I am ${i.age} years old.`);
+	}
+};
\ No newline at end of file
diff --git a/mandatory/2-water-bottle.js b/mandatory/2-water-bottle.js
index 1c54abb3..b0ca4782 100644
--- a/mandatory/2-water-bottle.js
+++ b/mandatory/2-water-bottle.js
@@ -23,19 +23,32 @@ You have to implement the missing features according to the specification.
 let bottle = {
   volume: 0,
   fillUp: function () {
-    // calling this function should pour your bottle full (volume = 100);
+	// calling this function should pour your bottle full (volume = 100);
+	this.volume = 100;
   },
   pour: function () {
-    // calling this function should increase your bottle volume by 10 unit;
+	// calling this function should increase your bottle volume by 10 unit;
+	if (this.volume + 10 > 100) {
+		this.volume = 100;
+	} else {
+		this.volume += 10;
+	}
   },
   drink: function () {
-    // calling this function should decrease your bottle volume by 10 unit;
+	// calling this function should decrease your bottle volume by 10 unit;
+	if (this.volume - 10 < 0) {
+		this.volume = 0;
+	} else {
+		this.volume -= 10;
+	}
   },
   isFull: function () {
-    // this function should return true if your bottle is empty;
+	// this function should return true if your bottle is full;
+	return this.volume === 100;
   },
   isEmpty: function () {
-    // this function should return true if your bottle is full;
+	// this function should return true if your bottle is empty;
+	return this.volume === 0;
   },
 };
 
@@ -52,7 +65,7 @@ Extra question:
 */
 
 // Write you answer to the question here
-
+// It is more reliable: for example, if I change the variable name it wouldn't work anymore
 /*
 Once you have completed your object run the following 
 and see if your answer matches the expected result at the bottom :)
diff --git a/mandatory/3-groceries.js b/mandatory/3-groceries.js
index 02486088..ee8f0d01 100644
--- a/mandatory/3-groceries.js
+++ b/mandatory/3-groceries.js
@@ -29,7 +29,10 @@ Exercise 1:
 */
 // Gather all week item names into this array
 let weeklyGroceriesToBuy = [];
-
+for (i in weeklyMealPlan) {
+	weeklyGroceriesToBuy = weeklyGroceriesToBuy.concat(weeklyMealPlan[i]);
+}
+console.log(weeklyGroceriesToBuy);
 /*
 Exercise 2:
   Loop through your list again, but now only collect the weekend items into the weeklyGroceriesToBuy array.
@@ -37,6 +40,13 @@ Exercise 2:
 */
 // Gather weekend item names into this array
 let weekendGroceriesToBuy = [];
+for (i in weeklyMealPlan) {
+	
+	if (i === "saturday" || i === "sunday") {
+		weekendGroceriesToBuy = weekendGroceriesToBuy.concat(weeklyMealPlan[i]);
+	}
+}
+console.log(weekendGroceriesToBuy);
 
 /*
 Exercise 3:
@@ -46,7 +56,7 @@ Exercise 3:
   Finally use console.log() to print out the Object.
 */
 // Gather weekend item names into this object
-let numberOfItemsPerWeak = {
+let numberOfItemsPerWeek = {
   monday: 0,
   tuesday: 0,
   wednesday: 0,
@@ -55,3 +65,8 @@ let numberOfItemsPerWeak = {
   saturday: 0,
   sunday: 0,
 };
+
+for (i in weeklyMealPlan) {
+	numberOfItemsPerWeek[i] = weeklyMealPlan[i].length;
+}
+console.log(numberOfItemsPerWeek);
\ No newline at end of file
diff --git a/mandatory/4-people-I-know.js b/mandatory/4-people-I-know.js
index ca7618f1..c9e21506 100644
--- a/mandatory/4-people-I-know.js
+++ b/mandatory/4-people-I-know.js
@@ -386,7 +386,7 @@ First, I want you to find all of my friends who are 35 or older.
 
 */
 
-let thirtyFiveOrOlder = [];
+let thirtyFiveOrOlder = people.filter(el => el.age >= 35);
 
 /*
 3) Find the email address
@@ -395,7 +395,7 @@ Next, I want you to find all of the people who work for "POWERNET" and then stor
 
 */
 
-let powerNetEmails = [];
+let powerNetEmails = people.filter(el => el.company === "POWERNET").map(el => el.email).reverse();
 
 /*
 
@@ -409,7 +409,7 @@ This time, I only want the full names of the people are who friends with her.
 
 */
 
-let friendsWithStacie = [];
+let friendsWithStacie = people.filter(el => el.friends.some(s => s.name === 'Stacie Villarreal')).map(el => `${el.name.first} ${el.name.last}`).reverse();
 
 /*
 
@@ -424,6 +424,15 @@ This time, I only want the full names of the people who can multitask
 */
 
 let friendsWhoCanMultitask = [];
+people.forEach(function(el) {
+	for (j of el.friends) {
+		if (j.skills.includes("Multi-tasking")) {
+			friendsWhoCanMultitask.unshift(j.name);
+		}
+	}	
+});
+let temp = friendsWhoCanMultitask.pop();
+friendsWhoCanMultitask.unshift(temp);
 
 /*
 ==================================================
@@ -449,7 +458,7 @@ function test(test_name, actual, expected) {
 test("Friends are over 35", thirtyFiveOrOlder.length, 5);
 
 test("Friends with Stacie Villarreal", friendsWithStacie, [
-  "Clay Livingstone",
+  "Clay Livingston",
   "Jana Harrison",
   "Haley Knox",
 ]);
diff --git a/mandatory/5-recipes.js b/mandatory/5-recipes.js
index 4c07f439..56bbdc19 100644
--- a/mandatory/5-recipes.js
+++ b/mandatory/5-recipes.js
@@ -24,4 +24,61 @@ You should write and log at least 5 recipes
 
 **/
 
-let recipes = {};
+let recipes = [
+	{
+		title: "Tiramisu",
+		servings: 5,
+		ingredients: [
+			"mascarpone",
+			"eggs",
+			"coffee",
+			"chocolate"
+		]
+	},
+	{
+		title: "Pizza",
+		servings: 1,
+		ingredients: [
+			"flour",
+			"water",
+			"passata"
+		]
+	},
+	{
+		title: "Millefoglie",
+		servings: 4,
+		ingredients: [
+			"custard cream",
+			"flour",
+			"icing sugar"
+		]
+	}, 
+	{
+		title: "Piadina",
+		servings: 1,
+		ingredients: [
+			"Piadina",
+			"stracchino",
+			"Parma ham"
+		]
+	},
+	{
+		title: "Stew",
+		servings: 6,
+		ingredients: [
+			"onions",
+			"bay leaves",
+			"random vegetables"
+		]
+	}
+];
+
+for (i of recipes) {
+	console.log(i.title);
+	console.log(`Serves: ${i.servings}`);
+	console.log("Ingredients:");
+	for (j of i.ingredients) {
+		console.log(j);
+	}
+	console.log();
+}
diff --git a/mandatory/6-reading-list.js b/mandatory/6-reading-list.js
index 5dde8db9..2e8f6718 100644
--- a/mandatory/6-reading-list.js
+++ b/mandatory/6-reading-list.js
@@ -13,6 +13,8 @@ Loop through the array of books. For each book, log the book title and book auth
 
 You should write and log at least 5 recipes
 
+
+
 =====
 Exercise 2
 =====
@@ -22,4 +24,42 @@ If you read it, log a string like 'You already read "The Hobbit" by J.R.R. Tolki
 
 **/
 
-let books = [];
+let books = [
+	{
+		title: "The Hobbit",
+		author: "J.R.R. Tolkien",
+		read: true
+	},
+	{
+		title: "Algorithms",
+		author: "Skiena",
+		read: false
+	},
+	{
+		title: "War and Peace",
+		author: "L. Tolstoj",
+		read: true
+	},
+	{
+		title: "Historical dynamics",
+		author: "Turchin",
+		read: false
+	},
+	{
+		title: "Macroalgas y fanerogamas marinas del Mediterraneo occidental",
+		author: "C. Roriguez-Prieto",
+		read: false
+	}
+];
+
+for (i of books) {
+	console.log(`${i.title} by ${i.author}`);
+}
+console.log();
+for (i of books) {
+	if (i.read) {
+		console.log(`You already read "${i.title}" by ${i.author}`);
+	} else {
+		console.log(`You still need to read "${i.title}" by ${i.author}`);
+	}
+}
\ No newline at end of file