--Look!It________beJackontheplayground.--It________behim.BecauseIsawh

发布时间：2020-08-04 15:15:44

--Look! It ________ be Jack on the playground.--It ________ be him. Because I saw him enter the school library just now.A.must；mustn'tB.can；can'tC.may；mustn'tD.must；can't

网友回答

D解析must表推测判断“一定”，而在否定句中表推测判断都用“can't”。
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