1. 用方框内所给单词或短语的适当形式完成下列句子（有一项多余）

twelve    nature    throw away     use    found    appear

1. （1） The organization was on October 1,1999.
3. （2） My uncle lives on the floor in this building.
5. （3） We watched the train until it in the distance.
7. （4） It's to learn English well, It's a bridge to other cultures.
9. （5） Her hair soon grew back to its colour.