In western culture,21 was the age________ young people traditionally received a key to their parents’ door, as a symbol of entering adulthood.
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in which
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on which
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at which
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to which
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The boy likes playing jokes on his classmates, __________ of course makes him popular.
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which
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whom
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for which
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for whom
Living in Western China certainly has its problems, _________obtaining water is not the least.
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of which
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where
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as
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whose
—What do you think of teaching, Bob?—I find it fun and challenging. It is a job ______ you are doing something serious but interesting.
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where
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which
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when
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that