“Did Jim come?” “I don’t know. He _______ while I was out.”
A．might have comeB．might come
C．mush have comeD．should have come
A
根據(jù)句中有關(guān)時態(tài)可知“他來”發(fā)生在過去，故排除B；根據(jù) I don’t know 可知選項C語氣太肯定，不合適；選項D的意思是“本來應(yīng)該來”，與語境不合。
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