Safety in school has been of great concern because of frequent reports about accidents _______ students got injured or killed while in school .
#93689
A
that
B
when
C
in which
D
for which
推荐题目
The little boy who got lost decided to remain _____ he was and waited for his dad．
#93969
A
what
B
where
C
there
D
what
In fact , the old couple looked forward every week their grandson .
#92946
A
to see
B
to seeing
C
see
D
seeing
It was my sister ________ first had the idea to cycle along the entire Mekong River.
#93667
A
who
B
whom
C
/
D
which