—Is Jessica giving us a speech this evening?—No it be herShe to Japan．A. mustnt；has g

问题补充：

—Is Jessica giving us a speech this evening?

—No, it be her．She to Japan．

A. mustn ；has gone

B. mustn ; has been

C. can ; has gone

D. can ; has been

答案：

A. mustn ；has gone

B. mustn ; has been

(答案→)C. can ; has gone

D. can ; has been

解析：句意：杰西卡今晚要给我们做演讲吗？——不，不可能是她。她已经去了日本。结合语境可知下文前一句描述的是对将来的否定的推测，mustn’t表示禁止，一定不。故用can’t。后一句强调的是已完成的瞬间的动作，故用go。选C。