单选题 1.That they were wrong in the matters______now clear to us.
【正确答案】 B
【答案解析】其他单个名词性从句作主语,其谓语动词要用单数形式。但是,当两个有and并列的名词性从句作主语,并表示两件事情时,其谓语动词用复数形式。