题目内容
--Yesterday Mary broke two glasses when she was washing them.
--I'm not sure. How ________ she be so careless?
[ ]
A．may
B．should
C．could
D．must
答案：
解析：
解析：
|
I'm not sure. 提示不太相信上面的话，用How could...? 表示“……怎么可能呢?” |
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