①想要做某事
②许诺做某事
③保持学校清洁
④空气污染
⑤水污染
⑥重复使用购物袋
⑦地球的朋友
⑧看护环境
relative cousin tree be family grandson
—No, I haven't been ____________ yet.
—No, I go there on foot. The market is ____________my home.
— is Mr Wang speaking.