Question

I think the girl under the tree must be Lily.No, it ______be her. She is in the library now. ...

I think the girl under the tree must be Lily.No, it ______be her. She is in the library now. A．must B．may C．can’t D．could

Answer 1

C

本题考查学生对情态动词表推测的用法。Must be表示肯定推测，一定是。Can’t be表示否定推测，一定不是。而may be , could be表示不确定，可能是。根据答句她现在在图书馆，故答案为C。