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on 能力提升 一. 二. 15 BBBAC 三. 1. to visit only。 trying to 。 from D. from。 of B. of。 We were _____ ______learn that he was a teacher. 很糟糕。 Most zoos aren’ t ________ places for animals _______ _________ _______. ,幾乎不能動(dòng)。 Unit 13 We’ re trying to save the earth! 基礎(chǔ)導(dǎo)練 一、 根據(jù)句意及漢語提示完成句子 ’ s something strange at the __________(底部 ) of the bottle. 2. Don’ t throw the __________(垃圾 ) everywhere.. You should throw it into the bin. 3. Studying English has many ________(有利條件 ). So we should try to learn English well. 4. It is a ________(木制的 ) chair. 5. The man is carrying a small black ______(塑料的 ) handbag.