问题
选择题
I would appreciate very much if you could send me a few copies of the mechanic design of your
new model. [ ]
A. it
B. that
C. this
D. you
答案
答案：A
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I would appreciate very much if you could send me a few copies of the mechanic design of your
new model. [ ]
A. it
B. that
C. this
D. you
答案：A