问题
选择题
| —What shall we do then? —I am sorry, I don't know ______ to do. |
A. how B. what C. which D. when |
答案
答案：B
搜题请搜索小程序“爱下问搜题”
| —What shall we do then? —I am sorry, I don't know ______ to do. |
A. how B. what C. which D. when |
答案：B