I
1.C
2.A
3.A
4.A
5.D
II
1. Did you use to enjoy maths at school
2.I didn't use to like flying,...
3.We used to be friends,..
4.Did John use to work for IBM before..?
5.Winters didn't use to be as cold as ...
6. She used to live with her mother...
7.I didn't use to do any excercise
8. Did he use to play for MU?
III
1.C
2.A
3.A
4.D
5.A
6.C
7.A
8.B
9.A
10.D
11.D
12.A
13.C
14.B
15.C
16.D
17.B
18.C
19.B
20.D
IV
1.A
2.B
3.C
4.B
5.C
6.B
7.B
8.A
9.D
10.B
V
1. I used to stay up late to watch football matches last year
2.There used to be some trees in the field
3.Anna used to live with her mother parents
4.He used to be a poor man
5.Thay didn't use to go to the cinema every Sunday last year
( bài V này ko cần vế "but" cũng đc nha bạn