题目内容
We shall go to Shanghai on business before you _____ back next week（）
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The warmth of_sweater will of course be determined by the sort of_wool used．（NMET 2001）（）
Most animals have little connection with_animals_of different kind unless they kill them for food（）
She is_new comer to_chemistry but she has already made some important discoveries.（NM ET 94）（）
She ______ down and soon falls asleep（）
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