—He looks unhappy.—Yes,but he can’t say what it is_______is bothering him.
#85421
A
as
B
that
C
what
D
which
推荐题目
        she is not so healthy           she used to be?
#84712
A
How it is that; as
B
Why is it that; as
C
Is it why; that
D
How is it that; what
Was it in the village ____ we used to live in ____ the accident happened?
#85285
A
that, where
B
which, that
C
where, that
D
which, where
It was the hurricane ______ was called Katrina ______ destroyed the city of New Orleans. 
#85437
A
which; that
B
what; which
C
which; who
D
that; which
Is this the factory ______ my father visited last year.
#85119
A
what
B
the one
C
where
D
that