---Whywasheunhappyyesterday?---Aletterfromhome______anattackofhomesick

发布时间:2020-08-14 13:39:11

---Why was he unhappy yesterday?
---A letter from home ______ an attack of homesickness.A.set offB.set outC.set aboutD.set up

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A解析考查短语辨析。set off爆发,set out出发,set about着手做,set up 建立,句意:昨天他为什么不高兴?一封来自家乡的信使他突发了思乡病。所以选A。
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