Question

—Look! The woman out of the classroom_______be our headteacher. She is always standing there every morning.

—No, it_______be her. I saw her drive away just now.

A.must; can't B.must; mustn't C.can't; can't D.can; couldn't

Answer

A

【解析】

句意：——看!走出教室的那个女人一定是我们的班主任。她每天早上总是站在那里。——不，她不可能是。我刚才看见她开车走了。

考查情态动词。must必须、一定，表示肯定推测；can't不可能，表示否定推测；mustn't不必，表示禁止；can能、可能。第一个空，根据She is always standing there every morning. 可知，她每天早上总是站在那里，表示肯定推测，应用情态动词must；第二个空，根据I saw her drive away just now.可知，我刚刚看见她开车走了，表示不可能的推测，应用情态动词can't；故答案选A。