China’s population is expected to increase to about 1.5 billion in 2040, _____ it will start to decline slowly.
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A
where
B
which
C
after which
D
on which
推荐题目
They are walking down the way _______ there are many trees on ______side.
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A
that, both
B
in which, either
C
on which, either
D
/, neither
The book, ___________ is green, has been lent to my brother.
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A
of which cover
B
the cover of which
C
whose covers
D
its cover
The director made two films last year，one of __________ was set in Chongqing．
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A
them
B
those
C
what
D
which
All the students handwriting is very beautiful are going to the contest.
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A
who’s
B
whom
C
whose
D
who