3 . They have been working to prevent the environment here from ________ (destroy). (所给词的适当形式填空)

4 . People who risked their lives to save others are worthy of _________ (remember). (所给词的适当形式填空)

5 . His ________ (admit) to that famous university surprised us all for he was absent from school for a whole year. (所给词的适当形式填空)

6 . Usually at the beginning of school, the noise of desks ______ and closed could be heard in the street.

A．opened

B．being opened

C．opening

D．to be opened

7 .         to a top university, as in China, is also what many American students have been dreaming of.

A．Admitted	B．Being admitted
C．Having been admitted	D．To have been admitted

9 . I asked the kids to go out to play, because I wasn’t accustomed to ______ when I was working.

A．interrupting

B．interrupt

C．interrupted

D．being interrupted

10 . Despite _________ under the ruins after the earthquake and the great trouble he had _________, he was still positive and relived a younger girl beside him.

A．trapped; breathing	B．trapping; to breathe
C．being trapped; breathing	D．trapping; breathed