(2013·山东卷)There is no simple answer,________is often the case in science.
#66743
A
as 
B
that
C
when  
D
where
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         ,I have to put it away and focus my attention on study this week.
#68208
A
However the story is amusing
B
No matter amusing the story is
C
Whatever the amusing story is
D
No matter how amusing the story is
This is the only foreign film ___ I have seen this month.
#71736
A
that
B
when
C
which
D
of which
All the students went to see ______ with her.
#71958
A
what the matter was
B
what was the matter
C
what wrong was  
D
what was the wrong