问题
It was yesterday afternoon _____we had a meeting in the meeting room. [ ]
A: that
B: when
C: in which
D: at which
B: when
C: in which
D: at which
正确答案是：
同类题型
In our childhood, we were often _______ by Grandma to pay attention to our table manners. [ ]
Some of us remain________at our computer for hours every day，forgetting moving our body.
_______ questions in class, oneshould answer them as clearly as possible.