问题
选择题
Have you sent that letter off yet? There's something important I'd like to add _____ it. [ ]
A. up
B. to
C. /
D. with
答案
答案：B
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Have you sent that letter off yet? There's something important I'd like to add _____ it. [ ]
A. up
B. to
C. /
D. with
答案：B