问题
选择题
— I don't know ________ this math problem. It's too hard.
— You can ask Mr. Liu for help. [ ]
A. how to work out
B. when to draw up
C. how to give up
答案
答案：A
搜题请搜索小程序“爱下问搜题”
— I don't know ________ this math problem. It's too hard.
— You can ask Mr. Liu for help. [ ]
A. how to work out
B. when to draw up
C. how to give up
答案：A