Ex3: 

1.A

2.E

3.C/ because the old one is broken.

Ex4:

1.

2.F

3,E

Ex5:

1.My sister can swim well but she can't play badminton .

2.Hanh love French food so she goes to that French restaurant every weeks.

3.Although he was tired last night, he stayed up late to watch the football match.

4.I don't like this TV program because it's so boring

5.My mum went to Hue last month and his mum went to Hue last month too.

6.Because he wasx lazy, so he got bad marks

7.Although it rained hard yesterday, I went to school on time.

8.Lan is the most beautiful girl in her class.

9.Although Daisy is very tired, she has to do her homeworks

10.Because + viết y nguyên ra(mỏi tay nên nghỉ xíu)

11.Hien drives carefully

12.Nga's favorite sport is badminton

13.Jupiter is the bigest planet in the Solar System.

14.What healthy the children are !

15.We didn't win the match although we tried ours best to play well

16.Susan's favorite sport is badminton

Không biết có đúng ko nhưng mik sẽ giúp bạn. Chúc bạn học tốt ^^

My sister can swim very well but she can't play badminton

Hanh goes to that .... so she love french food

Although he was tired last night, he stayed up late to ...

I don't like this programme because it so boring

My mom went to Hue last month and so does his mom

Because of being lazy, he get bad mark

Although it rained alot yesterday, I went to school on time

Lan is the most beautiful girl in the class

Although daisy was tired, she has to do her home work

Because of intereting in the history of television, so ...

Hien drive very carefully

Nga favourite sport is badminton

Jupilter is the bigget planet

Minh khong biet lam

Although we tried our best to play, we didn't win the match

Susan's favourite sport is swimming