Thestudentsseemed,soIrepeatedt

The students seemed ____ , so I repeated the ______ question.

A．puzzled, puzzling,	B．puzzling puzzled,
C．puzzling puzzling	D．puzzled, puzzled

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---- The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
---- Oh, dear! She _______ a lot of difficulties!

A．may go through	B．might go through
C．ought to have gone through	D．must have gone through

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In our childhood, we were often _______ by Grandma to pay attention to our table manners.

A．demanded

B．reminded

C．allowed

D．hoped

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They _______ on the program for almost one week before I joined them, and now we ________ it as no good results have come out so far.

A．had been working; are still working	B．had worked; were still working
C．have been working; have worked	D．have worked; are still working

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David has won the first prize in singing; he is still very excited now and feels________ desire to go to bed.

A．the most

B．more

C．worse

D．the least

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________ in the mountains for a week, the two students were finally saved by the local police

A．Having lost

B．Lost

C．Being lost

D．Losing

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