1 They used to go swimming in the afternoon 

2 Her mom said that she was typing her asssignment then

3 I haven't seen her for three years

4 The lessons will be explained until alll the students understand by the teacher

5 A new library is going to be built in the area

6 We were made to laugh a lot by the clown

7 We used to be taken to the circus when we lived in the city by our father

8 I used to get up late last year, but this year I often get up early

9 Your homework have to be finished on time

10 This book is so interesting that I have read it many times

11 He is not old enough to go to school alone

12 The test was too long to finish in an hour

13 If only the weather were better today

14 Nam asked if Ba liked his car

4. The lessons will be explained until alll the students understand by the teacher.

5. A new library is going to be built in the area.

6. We were made to laugh a lot by the clown.

7 We used to be taken to the circus when we lived in the city by our father.

9. Your homework have to be finished on time.

10. This book is so interesting that I have read it many times.

11. He is not old enough to go to school alone.

12. The test was too long to finish in an hour.

13. If only the weather were better today.

Chúc học tốt!