问题
选择题
I'm afraid Mr. Harding _____ see you now. He's busy. [ ]
A. can't
B. mustn't
C. shouldn't
D. needn't
答案
答案：A
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I'm afraid Mr. Harding _____ see you now. He's busy. [ ]
A. can't
B. mustn't
C. shouldn't
D. needn't
答案：A