At 13，Samuel received a training course in drawing for three years，________ he got a good opportunity for further development.
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A
after that
B
after which
C
after it
D
after this
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Now everyone is concerned about how to conquer the economic crisis, __________is very important for us to preserve our standard of living．
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A
which success
B
its success
C
the success of which
D
the success of it
He was very rude to the customs officer, ____ of course made things even worse.
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A
who
B
whom
C
what
D
which
Britain’s first and only female prime minister , Margaret Thatcher, died on April 8 at the age of 87, after suffering a stroke (中风), _______ has aroused a flood of comments about her political life again.
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A
which
B
what
C
it
D
that
Maria has written two novels , both of _______ made into television.
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A
them
B
that
C
which
D
what
________is often the case, the weather has turned out well as expected.
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A
Which
B
When
C
What
D
As