题目

He seemed to have been asleep, so I said nothing, but sat ________ he would see me ________ waking. A. whether; when  B. that；when         C. which；where     D. where；when 答案：D 解析: D. 由where引导一个地点状语从句，表示坐 (sat) 的地方；后面是带有连词的现在分词作时间状语，when waking=when he woke。

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