----How unhappy your roommate looks!----Yes，but he’s not willing to tell me what it is____ is troubling him.
#85453
A
what
B
which
C
as
D
that
推荐题目
It was in the lab, ________ was taken charge of by Professor Curie, _______ they did the experiment.
#85369
A
where; that
B
that; that
C
which; that
D
which; where
It was not until 1938 _________ the first colour TV programme was broadcast.
#84982
A
which
B
that
C
when
D
on which
It was _____back home after the experiments.
#85525
A
not until midnight did he go
B
until midnight that he didn’t go
C
not until midnight that he went
D
until midnight when he didn’t go
It was yesterday ____ I saw her and it was almost 10 o’clock ____ she arrived.
#85078
A
when; when
B
that; that
C
when; that
D
that; when