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1. --- Where is Mary? --- She ____ in the library. A. should be B. must be C. can be D. must have been 2. His room is dark. He must ____ to bed. A. go B. be going C. have gone D. have been gone 3. "Will your father stay home tonight?" "I'm not sure, He ____to work." A. must go B. can go C. may be gone D. may be going 4. "Where is Tom?" "He isn't here I think he ____ have gone home." A. may B. must C. might D. A or B or C 请下载附件： 点击下载 (责任编辑：admin) |