问题补充:
------Is this ruler Mary’s?
------No, it Mary’s. Hers is on the desk..
A. can be
B. can’t be
C. must be
D. mustn’t be
答案:
A. can be
(答案→)B. can’t be
C. must be
D. mustn’t be
解析:否定性推测要用can’t。
时间:2019-05-25 21:00:16
------Is this ruler Mary’s?
------No, it Mary’s. Hers is on the desk..
A. can be
B. can’t be
C. must be
D. mustn’t be
A. can be
(答案→)B. can’t be
C. must be
D. mustn’t be
解析:否定性推测要用can’t。