----_____is it that is troubling Mary ?----Working out the maths problem..
#70665
A
What
B
How
C
Why
D
Which
推荐题目
The company has a free long-distance telephone number_____ customers may call with any questions they have about the products .
#70287
A
when
B
so that
C
while
D
as
The guests will be shown around a lot of places_____few other visitors can go.
#73599
A
what
B
which
C
where
D
when
While_______ us her experience in Africa, she couldn’t help crying.
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A
told
B
to tell
C
is telling
D
telling
Evidence has been piled up ______ drinking water after getting up in the morning contributes to one’s health.
#67528
A
what
B
which
C
if
D
that