（2014年北京市西城区高三5月二模试题）31. A person who has never tasted bitter won’t know ______ sweet is.
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A
which
B
what
C
when
D
why
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Don't throw away the old books. Give them to ________ needs them．
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A
whoever
B
anyone
C
who
D
whomever
---Do you know _______?---Sorry, I have no idea.
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A
where did you park my car
B
what’s the matter with him
C
which the way is to the park
D
when they have finished the work
It is my favorite book which is about _________．
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A
how did Alice find her lost parents
B
what did Alice find her lost parents
C
how Alice found her lost parents
D
what Alice found her lost parents
—Can you tell me ______ ?—Yeaterday afternoon.
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A
when the train leaves
B
when does the train leave
C
when the train left
D
when did the train leave