—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
It  ________  last night_____ Tom saw an interesting film in Dongfeng Cinema.
#85130
A
is; that
B
was; that
C
was; which
D
was; who
 I wonder ______ you were doing last night.
#85416
A
it was what that
B
what was it that
C
that what it was
D
what it was that
It is in their ability to speak ______ humans ______ from animals. 
#85263
A
which; differ
B
that; different
C
that;differ
D
which;different