情态动词专项练习题1. - Where is Mary? - She _ in the library.She told me she wanted to borrow some books from the library. A. should be B. must be C. can be D. must have been2. His room is dark. He must _ to bed. A. go B. be going C. have gone D. have been gone3. “Will your father stay home tonight?” “Im not sure, He _to work.” A. must go B. can go C. may be gone D. may be going4. “Where is Tom?” “He isnt here I t
