(   ) 2. We didn't know what kind of snake       him.

   A. bit   B. bat

   C. bite   D. bites

(   ) 1. Lingling was talking       her mobile phone.

   A. on   B. by   C. with   D. in

5. The students are reading books        the teacher came in.

4. I was watching TV series        my father got home.

3. Tom was playing computer games       his brother was doing the homework.

2. My sister was cleaning the windows       it rained.

 用while或when填空

1. I saw Mr Smith       I was walking in the street.

10. The little child        (藏) behind the tree and his mother couldn't find him.

9. There is a television in the       (角落) of the room.

8. The doctor told me to take the        (药) three times a day.