Thefirstthing________youshoulddoi

发布时间：2020-07-27 10:06:07

The first thing ________ you should do is to learn all the new words by heart．A.whatB.thatC.whichD.who

网友回答

B解析定语从句中缺宾语且先行词被序数词修饰，故只能用that．
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