(       )1. ―How does your father go to work?

      — He________ walk but he takes the bus now.

A. am used to                B. used to

C. use to                   D. am used

7. Some rare plants_(disappear) because of the bad weather in the past few years.

6. The little boy    won’t go to bed until his mother_(come) back.

5. Someone  _(call) the police, I think. You  needn’t do that again.

(2)  Jack used not to play soccer, _________ ？

A. didn't he             B. did he

    C. wasn't he      D. was he

(1)________ Mary_______ to be a doctor?

A. Does； use                 B. Did; use

C. Is; used                   D. Was; used

4.  他过去戴眼镜吗？

______ he use to________________ ？

3.  他刻苦学习，在考试中获得了好分数。

He studied hard and__________________________ on his exams.

2.  她仍然时常拉小提琴。

She still plays the violin __________  _______  _______

1.保拉过去真的很安静。

Paula_______________________ really quiet.