1 she went to university so as to study engineering

2 if he had prepared for the interview, he would have got the job

3 nam is study the best in my class

4 if i had enough money, i could buy this car

5 it was not until 199 that she became a teacher

6 A new house are going to be built this month

7 when are you listen to music to relax ?

câu 7 mk ko chắc 

1 A 

2 A

3 D

4 B

5 hok biết

6,5 gam Zn cần tác dụng vừa đủ với bao nhiêu lít khí Clo ( đktc)