问题
选择题
| How _______ this accident _______? |
A. did; happen B. was; happen C. is; happened D. X; happened |
答案
答案：A
搜题请搜索小程序“爱下问搜题”
| How _______ this accident _______? |
A. did; happen B. was; happen C. is; happened D. X; happened |
答案：A