2. 外语
  3. ______ in doing an examination, the time passed by quickly.

______ in doing an examination, the time passed by quickly.

admin2012-06-13  11
问题 ______ in doing an examination, the time passed by quickly.
选项 A、Being absorbed
B、Having been absorbed
C、When they were absorbed
D、Be absorbed
答案C
解析 句子大意为：当他们专心投入考试中的时候，时间就过得非常快。本题综合考 查语态、时态。可用排除法解题：A项缺主语B项为现在完成时，与主句的过去时不搭配； C项为时间状语从句；D项表述中助动词be的用法错误。所以，正确答案是C。
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