The coal miners    in the coal mine for 10 hours before we came to their rescue.

The coal miners    in the coal mine for 10 hours before we came to their rescue.

题型:不详难度:来源:
The coal miners    in the coal mine for 10 hours before we came to their rescue.
A.had trapped B.had been trapping
C.had been trappedD.would have been trapped

答案
C
解析
考查时态。根据before we came to their rescue用一般过去时,故煤矿工人被困为过去的过去,故用过去完成时,选C。
举一反三
More and more farmers arrive in our city for the money-making jobs the      before leaving that Houston.
A.were promisedB.have promisedC.promiseD.have been promised

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Had I mastered the statistic technique, a large amount of time and, energy      .
A.was avidB.had been savedC.will be savedD.would have been saved

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He is a foreigner. But now he       on the right of the road in China.
A.used to driveB.is used to driveC.used to drivingD.is used to driving

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A.is belonged toB.is belonging toC.belongs toD.belong to

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The 30th Olympic Games       in London, England in 2012.
A.are going to be heldB.is going to holdC.are going to holdD.will hold

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