I simply couldn't understand how it ________ that you did so much work within such a short time?

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－Anything to ________ your present research work?

－A great deal, to tell you the truth.

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Hitler set out to conquer all of Europe in the belief that the Germans were the master ________.

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－The disease he suffers is not easy to cure.

－I know, but is he ________ better?

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We believe that the Chinese astronauts will ________on the moon sooner or later．

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It is a beautiful car，but it is not ________the price that I paid for it．

[　　]

Our computer works unsteadily（不稳定）．It sometimes suddenly stops or doesn't start up．

Maybe，the connector between the computer and the screen is ________．

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In dealing with public relations，we should make every effort to prevent the ________in personality．

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I'd like to buy a house-modern．comfortable．and ________in a quiet neighborhood．

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A lot of questions have ________ at the meeting．

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