A relative of yours ______ this evening.

A. will be coming to see you       B. will have been coming

C. would come to see you            D. won't have seen you 

 The police ______ for the lost child everywhere.

A. is looking B. has looked  C. are looking       D. are looked

 One of the students hasn't prepared _____ lessons very well.

A. one's        B. ones        C. their        D. his

—Two months ______quite a long time.

　　—Yes, I’m afraid that he will miss lots of his lessons.

　　A. is    B. are    C. was   D. were

_____ many times, but he still couldn't understand it.

　　A. Having been told　　　　　　　　　　 B. Though he had been told

　　C. He had been told　　　　　　　　　　 D. Having told

I had Helen's brother _____ the windows, but Helen had them _____ instead.

　　A. to clean； cleaned　　　　　　　　　B. cleaned； cleaned

　　C. cleaning； cleaned　　　　　　　　　D. clean； cleaned

—Which one can I take?

       —-You can take__________ of them; I'll keep none．

       A．both           B．any            C．either         D．all

An expert, together with some scientists ______to help in the work.

A. was sent    B. were sent    C. has sent    D. have sent   

_______ rich one may be there is always something one wants.

A. Whatever   B. Whenever

C. However    D. Wherever

The doorkeeper gave the alarm _______ he saw the smoke.

A. while  B. the instant

C. suddenly    D. before