I was surprised by her words,which made me recognize ______ silly mistakes I had made.
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A
what
B
that
C
how
D
which
推荐题目
The factory ______we'll visit next week is not far from here. 
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A
where
B
to which
C
which
D
in which
 The question is too difficult and we found ________.
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A
it not easy to answer it
B
it was not easy for us to answer it
C
it’s not easy to answer
D
it not easy to answer
 _______ in the regulations that you shouldn't tell other people the password of your e-mail account.
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A
What is required
B
What requires
C
It is required
D
It requires