There were two boys in the lab, ______did the experiment successfully.
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A
the clever of whom
B
the cleverer or whom
C
the clever of them
D
the more clever of them
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He is a ___ friend of mine.
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A
close
B
silent
C
quiet
D
near
I’m afraid I’m not _____ to help with the show next week.
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A
available
B
dependable
C
valuable
D
convenient
—I think 20 dollars for it is OK.—No,I’d gladly pay            for it.
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A
twice as much
B
three times of what
C
the price twice
D
as much three times