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While watching television. .? A.the doorbell rang? B.the doorbell rings? C.we he

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While watching television. .? A.the doorbell rang? B.the doorbell rings? C.we he

While watching television,  .?

A.the doorbell rang? B.the doorbell rings? 

C.we heard the doorbell ring?  D.we heard the doorbell rings

 

试题答案

C

 

因为题干使用了watching,可以推断该句主语为人,排除A、B两项。又因为hear是感官动词,其后要使用动词原形作宾语补足语,所以D项不对。