Ex1:

I always have a big breakfast.

She goes to school by car.

He has a lot of friends.

Lan loves collecting stamps.

Huy likes playing computer games.

I am the best student in my class.

She studies English very well.

A tracffic light has three colours.

Dogs can bark.

She is very beautiful.

Ex2:

I am doing homework.

She is playing the guitar.

They are talking about a singer.

It is eating the food.

We are playing football.

I am busy now.

She is listening to music at the moment.

They are having an important test.

Mai is looking at the flower.

Lan is surfing the Internet at the present.

Ex3:

I'm taller than my best friend.

My mother is more careful than my gramma.

My new computer is more expensive than my old one.

She is heavier than her sister.

He does his homework faster than me.

Lan is more friendly than Mai.

Her friends are more confident than mine/ my mates.

Tony is more active than Phong.

Huy is more talkative than Quan

His homework is easier than mine.