问题
选择题
I can’t send an e-mail. Would you please teach me it?[ ]
A. how doing
B. when to do
C. what doing
D. how to do
答案
答案：D
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I can’t send an e-mail. Would you please teach me it?[ ]
A. how doing
B. when to do
C. what doing
D. how to do
答案：D