问题
选择题
| We were about to go outing _____ it began to snow heavily. |
A. when B. while C. as D. until |
答案
答案：A
搜题请搜索小程序“爱下问搜题”
| We were about to go outing _____ it began to snow heavily. |
A. when B. while C. as D. until |
答案：A