While she _____ TV, someone _______ at the door.A.watch, knockedB.was watching,

While she _____ TV, someone _______ at the door.A.watch, knockedB.was watching,

题型:不详难度:来源:
While she _____ TV, someone _______ at the door.
A.watch, knockedB.was watching, knocked
C.watching, knockingD.was watching, is knocking

答案
B
解析

试题分析: 句意:当她在看电视时,有人敲门。knock at 敲门;while当……的时候,引导的时间状语从句动词为延续性动词,进行时态,与主句同时发生,故选B
举一反三
We will give you a good price ________ you are thinking of buying it.
A.untilB.andC.so thatD.if

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           he was only ten , he could run faster than any kid in school .
A. Though             B. But                     C. So 
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A.whenB.becauseC.unlessD.that

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This is a cheap and simple process(过程), ____ ,there are dangers.
A.butB.soC.becauseD.However

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A.asB.likeC.seemD.looks like

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