—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
Could it be in the restaurant in_______ you had dinner with me yesterday ________ you left behind your keys and wallet?
#84722
A
which；which
B
which；that
C
that；where
D
where；where
It is the idea____smiles can get rid of cold ____has been proved by the researchers many times.
#85504
A
which; which
B
that; that
C
that; which
D
which; that
It was only quite recently, however, ______ I began to understand how much my parents love me.
#85293
A
when
B
that
C
before
D
after
If I remember correctly， _______was ten years ago that your brother went to Canada.
#84778
A
this
B
which
C
as
D
it
__________ his work was still as it had been?
#47003
A
It was why that
B
Why is that
C
It is why that
D
Why was it that