1. were performed
2. have lived
3. has collected
4. didn't watch

1. B at
2. D were
3. C aspect
4. C. qualified
5. D. like
6. A on
7. A since
8. D both A&C
9. B studies
10. A is grown
11. A use
12. D will go out
13. B will become
14. B get


1. Nga was tired after the trip so she went to bed early
2. He said he would go to Da Lat the next day
3. Mrs.White asked him how he went to school
4. We wish we could go out
5. If it doesn't rain, we will go to the movies.
6. Unless you're carefull, you will cut yourself with that knife


1. My father was sick so he didn't go to work yesterday.
2. If I have money ,I will buy a new bike
3. If you play sports, you will become stronger.