—What does “plumber” mean, Alice?—It means a person        fixes sinks and toilets.
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A
which
B
who
C
what
D
whom
推荐题目
That is the cook ______ came from London.
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A
that
B
which
C
/
D
Who
This is one of the best films _________ this year. 
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A
have been shown
B
that have shown
C
that have been shown
D
which has been shown
I like the park_____they talked about just now.
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A
that
B
when
C
where
D
how