The students are discussing what ____ at present.
问题描述:
The students are discussing what ____ at present.
A、has done B、was done C、will be done D、should be done
答
D
学生们现在正在讨论应该做什么
A 的时态语态都不对.B 的时态不对.C,D 都可以,相对来说D 较好些.