---Whatshallwedothere?---I'msorry.Idon'tknow________todo.A.howB.w

发布时间:2020-08-15 10:44:28

---What shall we do there?---I'm sorry.I don't know ________ to do.A.howB.whatC.whichD.when

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B解析what to do意为“干什么”。
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