题目内容
All the club members _______ the floor when they heard someone _______ for help.
- A.swept; were shouting
- B.swept; shouted
- C.were sweeping; shouting
- D.were sweeping; shouted
C
when 引导的时间状语从句,从句的动作发生在主句的动作之中,故选C
when 引导的时间状语从句,从句的动作发生在主句的动作之中,故选C
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