If the machine makes a mistake -- ____ rarely happens -- it gives a warning in the form of a red light.
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A
that
B
which
C
as
D
what
推荐题目
(原创) is reported in the newspaper, 86 persons were killed in the hurricane.
#75449
A
It
B
As
C
Which
D
What
I am quite sure that Mr. Smith will take up his story ___ he stopped yesterday.
#78590
A
that
B
in which
C
where
D
on which
If you are in a country ______they don’t speak your language，you can show the address to the taxi driver.
#75356
A
which
B
where
C
what
D
when
--- Where did you see Avatar ?--- It was in the same cinema _______ I ever watched 2012.
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A
that
B
which
C
where
D
as