1 . With all the difficult problems ______ (settle), the boss went abroad for a trip.(所给词的适当形式填空)
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2 . Please keep me i________ (通知) of your up-to-date information. (根据中英文提示填空)
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3 . Take care not to keep your children _________ (expose) to bad books. (所给词的适当形式填空)
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