It was essential that the application forms ____________back before the deadline.
A、be sent
B、must be sent
C、were sent
D、would be sent
【正确答案】：A
【题目解析】：It was essential that +虚拟语气（should do）
It was essential that the application forms ____________back bef
- 2024-08-16 05:25:13
- 笔试(00004)