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By all _______, you must try every _______ to help him.

A. mean, mean       B. means, means   

C. means, mean      D. mean, means

It has come to my notice _______ some of you have missed classes.

    A. what               B. which

    C. that               D. when

 “John took a photograph of you just now.” “Oh, really？ I ______.”

    A. didn’t know                B. wasn’t knowing

    C. don’t know                 D. haven’t known

I left my pen on the desk and now it’s gone； who _____ it？

    A. took                B. has taken

    C. will take           D. had taken

“Mr Smith isn’t coming tonight.” “ But he _____.”

    A. promises B. promised

    C. will promise D. had promised

. I often have conversations with John over ______ telephone, while keep in touch with Tom by ______ letter.

A. 不填；the B. 不填；a

C. the；不填  D. the; a

Which person do you refer to, the one with ______ long hair or the one with _______ long beard?

A. a, a     B. 不填，不填

C. a, 不填      D. 不填，a

 “Will you go skiing with me this winter vacation？” “It ______.”

    A. all depend                     B. all depends

    C. is all depended                D. is all depending

They promise that the work would all be finished _____ next week.

A. until   B. in

C. by      D. to

We were all worried over _______ you were sick.

A. that    B. which

C. what   D. the fact that