1 . The guests came in, but she remained ________(stand) at the desk reading.

2 . He stood by the piano, eyes closed, listening for the first time to his own work__________(play)by someone else. （所给词的适当形式填空）

3 . They then heard a woman’s voice__________(come) from the wrecked vehicle. （所给词的适当形式填空）

4 . Their_________(expand) business became a large corporation in 1996, with three generations of Ans working together. （所给词的适当形式填空）

5 . There are some students on the playground.
They are playing basketball.(句型转换)
=There are some students on the playground_________________basketball.

6 . She stood at the door as if_____________(wait)for someone. (所给词的适当形式填空)

7 . With their son _______ a foreign college now, the parents have some financial problems now and then.

A．to attend

B．having attended

C．attend

D．attending

8 . Seeing the front door ___________ (repair), Jack went into the classroom through the back door. （用所给单词适当形式填空）

9 . They didn’t think much of it when they saw two cyclists ______（repair）their bike on the side of the road. (所给词的适当形式填空）

10 . Even if it is hot, you had better not get the air-conditioning ______ (run) all the time. (所给词的适当形式填空）