39.When you read the book, you’d better made a mark ____ you have any questions.
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A
at which
B
at where
C
place
D
where
推荐题目
These two countries are similar they both have a high snowfall during winter.
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A
to which
B
in which
C
in that
D
except that
It is such a modem machine ____few of the workers know how to operate it.
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A
which
B
that
C
as
D
the one
Henry had just given himself for lost ______ he was spotted by a ship.
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A
when
B
while
C
as
D
after
Although the old man is in his sixties, ___ he walks fairly fast.
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A
but
B
yet
C
therefore
D
however
Jim is determined to get a seat for the concert ________ it means standing in a queue all night.
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A
now that
B
even if
C
as if
D
so that