1 . He divided the sweets _______the children who were divided _____ three groups.
A.in; in | B.into; into | C.between; in | D.among; into |
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2 . Some countries are better than others ________ looking after the environment. (用适当的词填空)
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3 . I think Qian Xuesen is one of the most important scientists ________ all time in history.(用适当的词填空)
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