问题
选择题
I am sorry to say I can't help ________ the room because I am busy right now.[ ]
A．cleaning
B．being cleaned
C．clean
D．cleans
答案
答案：C
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I am sorry to say I can't help ________ the room because I am busy right now.[ ]
A．cleaning
B．being cleaned
C．clean
D．cleans
答案：C