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It is ________ the pupils do in their spare time ________ really prepares them to take their place in society as citizens when they grow up.
#30331
A
which; that
B
that; what
C
what; that
D
that; which
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It must have rained last night, ________ the ground is wet now.
#31320
A
for
B
because
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since
D
now that
 It puzzles the scientists _____ some mammals produce their young _____ others lay eggs.
#30772
A
that; while
B
what; while
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that; as
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 We had not waited __________ she came.
#30160
A
long before
B
before long
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after long
D
soon after
—What upsets him?—________ his computer is out of order.
#30313
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Whether
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What
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That
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Green economy offers a new model ______ people could both protect the climate and develop the economy, according to what Li said at the International Cooperative Conference on Green Economy and Climate Change.
#32685
A
how
B
why
C
where
D
which