题目内容
You ________ be tired－you've only been working for an hour．
[ ]
A．must not
B．won't
C．can't
D．may not
答案：C
解析：
解析：
|
句子破折号后的内容对前一句进行解释说明：你只工作了一个小时，所以你不可能累的．表示否定推测时用can't． |
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相关题目
You _____ be tired; you have been working for so long a time,
but he _____ be tired; he has just begun to work.
|
A．may not; must |
B．must; may not |
C．can’t; must |
D．must; can’t |