问题

Safety in school has been of great concern because of the frequent reports ________ students got injured or killed while in school. [ ]
A: that
B: when
C: which
D: what
B: when
C: which
D: what
正确答案是:
同类题型
If you are ______ about Brazil, you may read this book.[ ]
We hope you can accept our ___________and join us.
Did Jack take the doctor’s advice that he ________ inbed for a couple of days
This new model of car is so expensive thatit is beyond the reach of those with ____ income.
Did Peter come back early last night? — Yes. It was not yet eight o’clock _________ he arrived home.