---Wherearetheygoingonvacation?---Theyplan______toHongKong.A.flyingB.tof

发布时间:2020-08-06 20:28:11

---Where are they going on vacation?---They plan ______ to Hong Kong.A.flyingB.to flyC.fliesD.fly

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B解析考查plan to do sth.固定结构。
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