1 . 当妈妈在厨房里煮晚餐的时候，我和爸爸在准备母亲节礼物。
My father and I ________ Mother’s Day gifts while mum ________ dinner in the kitchen.

2 . I _________ (clean) my room when Jim came to visit me.

3 . His father left the house while he ________ the piano.

A．plays

B．played

C．was playing

D．is playing

4 . Maggie was reading in her room _________ her mother was cooking in the kitchen.

A．while

B．when

C．although

D．unless

5 . Eric’s mom ________ dinner while his dad was repairing the car when the rainstorm came.

A．made

B．was making

C．has made

D．is making

6 . While he ________ his sister’s things, she came into the room.

A．was looking through	B．looked through
C．has looked through	D．is looking through

7 . While I was reading, my mum ________ in the kitchen.

A．was cooking

B．cooks

C．will cook

D．have cooked

8 . While she ________ (read) a book, the phone rang.

9 . Tina ________ TV when her mother came back home yesterday.

A．watches

B．will watch

C．was watching

D．has watched

10 . I was visiting the Western Prefabricated Dishes (预制菜) Experience Hall when you called me last night. (改为否定句)
I ________ ________ the Western Prefabricated Dishes Experience Hall when you called me last night.