问题补充:
(·江西)It be the postman at the door.Its only six oclock.
A. mustn
B. can
C. won
D. needn
答案:
A. mustn
(答案→)B. can
C. won
D. needn
解析:根据Its only six oclock推知,那不可能是邮递员,否定形式推测要用can 或couldn 。因为must表推测时,只能用于肯定句。
时间:2021-12-26 07:48:44
(·江西)It be the postman at the door.Its only six oclock.
A. mustn
B. can
C. won
D. needn
A. mustn
(答案→)B. can
C. won
D. needn
解析:根据Its only six oclock推知,那不可能是邮递员,否定形式推测要用can 或couldn 。因为must表推测时,只能用于肯定句。
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