【题目】Tony couldn’t remember ________ he had turned off the computer before he left the office.
A．thatB．whereC．when D．whether
在线课程【答案】D
【解析】句意：Tony不记得他是否在离开办公室之前关掉电脑。whether“是否”，符合语境，故选D。
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Tony couldn’t remember he had turned off the computer before he left the office.A．thatB．whereC．when
编辑：chaxungu时间：2026-04-27 02:58:25分类：高中英语题库
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