—How unhappy your roommate looks!—Yes, but he's not willing to tell me what it is ________ is troubling him.
#84716
A
what
B
which
C
as
D
that
推荐题目
It was in 2008 ______ a terrible earthquake hit Wenchuan, Sichuan Province.
#85050
A
which
B
that
C
when
D
at which
It was only then ______ I began to have doubts about whether my story had ever been told.
#84694
A
when
B
Since
C
that
D
yet
Everybody knows about it! No one knows _________ prevented the rumor from spreading.
#85090
A
what was it that
B
what it was that
C
how it was that
D
why it was that
---Where did you get to know her? ---It was on the farm we worked.
#85398
A
that
B
there
C
which
D
where