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(   ) 6. There was no bus here;we       walk home.

   A. must   B. could

   C. had to   D. needed

1. 李林和李薇在火車(chē)站站臺(tái)上相互告別。

2. Li Lin and Li Wei are on the train station plaform,                         each other.

5. What       (happen) before you left?

4. He is surprised       (see) Li Lin.

3. You'd better       (go) and find Car 9.

2. When I got there,I heard many people       (sing) in the room.

5. Though it's c      to read in bed,it's bad for our eyes.

4. Forgetting my notes made me look s         .

3. I've got a t      of Jay's concert.