题目

—He was nearly drowned in a pool.   —Oh, when was ___ exactly?      — It was in 1983 ____ he was swimming with his friends. A. this; that         B. that; when        C. that; that         D. what; when 答案：B 解析: That，it都指那件事 第二句补充完整为 He was nearly drowned in 1983 when he was swimming with his friends.

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