Question

【题目】—Is Jessica giving us a speech this evening?
—No, it _______ be her. She _______ to Japan.
A.mustn't; has gone
B.mustn't; has been
C.can't; has gone
D.can't; has been

Answer 1

【答案】C
【解析】考查情态动词及短语辨析。在否定句中用can't “不可能”，表示有把握的否定推测。has gone to“去某地了，还没有回来”，故选C。