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All of a sudden it came to me ________ I might help wash my mom’s feet on Thanksgiving Day.
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A
if
B
when
C
which
D
that
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This college allows students to develop their own interests, to ______　extent they wished．
#31858
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whoever
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whatever
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however
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whenever
Bring the plants into a warm room _____ they will soon open.
#32285
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or
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There is no doubt ______ they all passed the examination.
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if
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David knocked at the door for nearly half an hour______Mary opened it, unwilling.
#30820
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 _______ he said is true.
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What
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Which
D
Whether