问题

Listen! Someone is knocking at the door. Who _____it be—It_____ be Tom. He phoned to visit me this evening.
A:may; may
B:may; shouldn’t
C:must; can
D:must; may;
B:may; shouldn’t
C:must; can
D:must; may;
正确答案是:
同类题型
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ering his health, I advise him to ______ an houror two each day to work out.
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