My sister met him at the Grand theatre yesterday afternoon,so he_______have attended your lecture.
问题描述：
My sister met him at the Grand theatre yesterday afternoon,so he_______have attended your lecture.
A.couldn't B.needn't C.mustn't D.shouldn't
答
My sister met him at the Grand theatre yesterday afternoon,so he_______have attended your lecture 昨天下午我妹妹在大剧院碰见了他,因此他【肯定没有】参加你的讲座. A couldn't 没有B needn't 不需要C mustn'...