I did all my homework, and then I went out with my friends.
A.Before I did all my homework, I had gone out with my friends.
B.Before I went out with my friends, I had done all my homework.
C.I had gone out with my friends just after I did all my homework.
D.After I did all my homework, I went out with my friends.

When did you use the computer?
A.How long have you used the computer?
B.How long is it since you last used the computer?
C.
D.How long did you use the computer?

It is over six months since I last played basketball.
A.I have started playing basketball for over six months.
B.I haven’t played basketball for over six months.
C.The last time I played basketball was over six months.
D.I last played basketball was over six months ago.

How long is it since he last taught primary students?
A.When did he last teach primary students?
B.When did he teach primary students?
C.How long has he taught primary students?
D.How many times has he taught primary students?

This is the first time he went abroad.
A.He has gone abroad for the first time.
B.He has gone abroad before.
C.He hasn’t gone abroad before.
D.The first time he went abroad was this time.

When did you first know him?
A.
B.How long did you know him?
C.
D.How long did you know him for the first time?

I’ve never seen such a beautiful dress before.
A.This is the first time I saw such a beautiful dress.
B.I’ve seen such a beautiful dress for the first time.
C.
D.This is the first time I’ve seen such a beautiful dress.

As soon as she left the house, the baby cried.
A.
B.Hardly had she left house than the baby cried.
C.After leaving the house, the baby cried.
D.She left the house before the baby cried.

He turned off the light, then he went out.
A.After going out, he turned off the light.
B.
C.After he turned off the light, he went out.
D.

He began working here ten years ago.
A.He hasn’t worked here ten years ago.
B.
C.It is ten years since he has worked here.
D.