Many questions have been answered by John. He must have previewed the lessons last night, ____ he?
A．needn’t B．hasn’t C．didn’t D．mustn’t
C
考查反義疑問(wèn)句。此題中含有情態(tài)動(dòng)詞表推測(cè)用法，must have done 表示對(duì)過(guò)去事情肯定的推測(cè)，根據(jù)時(shí)間last night，動(dòng)作在昨天晚上，所以用didn’t反問(wèn)，選C。
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