He came back late, ______ which time all the guests had already left.A、byB、duri

游客2023-10-07  11

问题 He came back late, ______ which time all the guests had already left.

选项 A、by
B、during
C、at
D、after

答案 A

解析 本题测试的是“介词+which”引导非限制性定语从句的用法。主句用一般过去时,从句用过去完成时,表明主句动作的终止为过去某个点,所以选A。
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