问题
We will never forget those happiest days _______ we spent on the summer camp.
A:which
B:that
C:when
D:on which
B:that
C:when
D:on which
正确答案是：
同类题型
They do some exercises _____Friday morning. [ ]
Peter is ________ than you, right?—-Yes, but he is ________ runner in our class.
He wasn’t angry when he heard the news. _____ he was very happy. [ ]
It has to be a place we can do lots of exercise.
Father’s Day is coming. I’ll buy a special _____/’present/ for my father.