问题
选择题
That is the very coin I need to ____ my collection. [ ]
A. add up
B. add in
C. add on
D. add to
答案
答案：D
搜题请搜索小程序“爱下问搜题”
That is the very coin I need to ____ my collection. [ ]
A. add up
B. add in
C. add on
D. add to
答案：D