Exe1: 

câu 1: I don't know why she collecting pens

câu 2: In the future I traveling around in Viet Nam

câu 3: Minh think skating is more interesting than playing board game

câu 4: Listening to music in the free time is my favorite hobby

câu 5: My sister and I sharing same hobby. We often go fishing at weekends.

Exe 2: 

câu 1: my->My

câu 2: i-> I

câu 3: model->Model

câu 4: you-> You

câu 5: there->There

#Chanh

$D.$

$1.$

$1.$ I don't know why does she like collecting pens. 

$2.$ In the future, I'll travel around Viet Nam.

$3.$ Minh thinks skating is more interesting than playing board games.

$4.$ Listening to music in the free time is my favourite hobby.

$5.$ My sister and I share the same hobby. We often go fishing at weekends.

$2.$

$1.$ My favourite hobby is watching the gold fish in the tank.

$2.$  I enjoy reading because it develops my imagination. 

$3.$ Model making is a wonderful way of spending time alone or even with your family. 

$4.$ You can make models of many things in the world. 

$5.$ There are many reasons why it is important to have a hobby. 

$3.$

My father has unusual hobby, carving eggshells. As everyone, knows eggshells are very fragile. My dad can make beautiful pieces of art from empty eggshells. It’s amazing!

He started the hobby five years ago after a trip to the US where he saw some carved eggshells in an art gallery. My father did not go to class to learn how to carve. He learned everything from the Internet.