On his way home he suddenly remembered that he (not lock)______ the door of the

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问题 On his way home he suddenly remembered that he (not lock)______ the door of the office.

选项

答案 had not locked

解析本题考查动词时态。句意：回家路上，他突然记起没有锁办公室的门。根据句意，从句的动作发生在主句的动作之前，而主句用一般过去时，所以从句要用过去完成时。

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Iremembered(lock)______thedoorbeforegoingtobed.havinglocked/locking