问题
选择题
My boss is expecting your reply. I would appreciate ______ back this afternoon. [ ]
A. you to call
B. you call
C. you are calling
D. your calling
答案
答案：D
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My boss is expecting your reply. I would appreciate ______ back this afternoon. [ ]
A. you to call
B. you call
C. you are calling
D. your calling
答案：D