Wedon'tknow________,perhapsinthea

发布时间：2020-07-27 13:21:46

We don't know ________, perhaps in the afternoon.A.how to startB.when to startC.where to startD.when start

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B解析点拨：此题考查“特殊疑问词+动词不定式”这个句型。由in the afternoon可知用when。
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