_____has happened many times, children may get drowned in this river. 
#73711
A
As
B
Which
C
What
D
That 
推荐题目
I have no idea ___.
#73632
A
that she has come
B
what she has come
C
that she comes
D
what she came
However _______, it’s worth it and I’ll get it .
#67730
A
the watch costs
B
much the watch costs
C
the watch will cost
D
much does the watch cost