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    精英家教网 > 高中英语 > 题目详情
    By the time he ____ at the party, all the other guests ____ playing games.
    A．arrived; had begunB．arrived; began
    C．had arrived; beganD．had arrived; have begun
    A
    考查by的时态。By的用法是，by后面跟什么时态，主句就采用什么完成时，总之by是完成时的标志。 所以选择A
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