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While reading alone in the classroom, . A. the lights suddenly went out B. a str

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While reading alone in the classroom, . A. the lights suddenly went out B. a str

Whilereading alone in the classroom, ________________.

A. thelights suddenly went out  

B.  a stranger came in and gave a cry

C.  she heard a loud cry outside

D. the door suddenly opened of itself

 

试题答案

答案:C

提示:
现在分词和主语是逻辑上的主谓关系。