—Listen!Helenissinginginthenextroom. It
问题详情：
—Listen ! Helen is singing in the next room.
It ____ be Helen. She has gone to Beijing.
A. can’t B. mustn’t C. may D. neen`t
【回答】
A
知识点：情态动词
题型：选择题
问题详情：
—Listen ! Helen is singing in the next room.
It ____ be Helen. She has gone to Beijing.
A. can’t B. mustn’t C. may D. neen`t
【回答】
A
知识点：情态动词
题型：选择题
