She loves giving parties, and does so whenever she can find 　　　 .

A．a(chǎn)n excuse　　 B．a(chǎn)n apology　　 C．a(chǎn)n explanation　　 D．a(chǎn) cause

All her time _______ experiments, she has no time for films.

A. devoted to do　　　　　　 B. devoted to doing

C. devoting to doing　　　　 D. is devoted to doing

The whole book ________ twelve units, ________ two that are mainly for revision.
 A. contains; including    B. includes; containing
 C. contains; containing    D. includes; including

What he says sounds_______.

A. as true 　　　 B. being true　　　　 C. true　 　　　D. to be true

The local health organization is reported ___ twenty-five years age when Dr. Green became its first president.　

A. to be set up　 B. being set up C. to have been set upD. having been set up

I did not realize she was not English _______ she spoke.

　 A．unless　 　 B．when　 　　 C．since　　 　 D．until

Was it in 2002 __________ he was still at middle school __________ the boy became expert at computer?

A. that; where　　 B. when; where　　　 C. that; when　　 D. when; that

Our teacher _______ at the office, for the light is still on.

　 A. must work　　　　　 B. must have done

　 C. must be working　　 D. is working

We drove all the way to the beach , _________.

A. have fun       B. just for fun     C. make fun of           D. have a fun

It must have rained last night, ________??
A.mustn't it B.can't it?
C.hasn't it  D.didn't it?