题目

——Why was our foreign teacher unhappy yesterday?     ——News about the tsunami striking her country ____ an attack of homesickness. A、set for  B、set out  C、set about    D、set off 答案：D 解析: set off引起，激起。A letter from his home set off an attack of homesickness…。set out出发，开始；set about开始着手。

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