问题
选择题
It is very difficult to _____ the green beans from the red ones, because there are too many of them. [ ]
A. work out
B. watch over
C. set down
D. sort out
答案
答案：D
搜题请搜索小程序“爱下问搜题”
It is very difficult to _____ the green beans from the red ones, because there are too many of them. [ ]
A. work out
B. watch over
C. set down
D. sort out
答案：D