As she was reading the newspaper in her chair, her grandmother (fall) ______ asleep.

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问题 As she was reading the newspaper in her chair, her grandmother (fall) ______ asleep.

选项

答案fell

解析 本题中as意思是“当……之时”,相当于when,while。它引导的时间状语从句表示主句谓语动作发生的背景,此时从句可以用过去进行时,主句谓语用一般过去时。此处空格为主句谓语,所以应该用其一般过去时。
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