September 11, 2001 is the day ______ we will never forget.
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A
that
B
when
C
on which
D
on that
推荐题目
The school year is divided into two semesters, __________is September through December.
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A
the first of which
B
the first of them
C
the first of it
D
the first of that
_____ in the library regulations that any book borrowed be returned by due time, or the borrower will be fined．
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A
What is required
B
It is required
C
As is required
D
Which is required
Mr. Thompson, without _________timely help finishing the task would have been out of the question, fell ill last week.
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A
his
B
whom
C
who
D
whose
Can you think of a situation ______people communicate only by meansof bodylanguage?
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A
that
B
which
C
where
D
when