Exactly____theydidwhenatlasttheyr

发布时间:2020-07-25 13:43:24

Exactly ____they did when at last they reached the sea remains a plete mysteryA.thatB.howC.whichD.what

网友回答

D解析考查名词性从句。句中what引导主语从句,在从句中作宾语。句意:当他们到达海边最终确切做了什么仍然完全是个迷。
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