题目内容

— What did you think of Act I of the play last night?
— I’m sorry. The play ________ when I got there.
A.had been startedB.had been on for half an hour
C.was to startD.had begun for half an hour
B
句意:戏剧在我到达之前就已上演了半小时,即表示“过去的过去”,且短暂性动词不与持续性时间连用,故须将 start→be on 才可与持续性时间连用。
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