The government of the United States began at once to investigate the case ______ a lot of students were killed.
#77430
A
that
B
when
C
where
D
why
推荐题目
He has made another wonderful discovery, _____ I think is of great importance to science.
#77865
A
which
B
what
C
when
D
that
_____was expected, he broke his promise once more, ______left his friends down.
#77883
A
It; which
B
As; which
C
It; as
D
Which ;which
The Great Wall is a place ______ almost all tourists would like to visit when they come to Beijing．
#77585
A
why
B
which
C
when
D
where
People who seldom do sports or ________ diet is high in fat will put on weight quickly.
#77844
A
who
B
whose
C
which
D
what