词语接龙

例：度过—过去—去年—年轻—轻松—松鼠

理由—____—____—____—____—____

一只小猪有4条腿，6只小猪有24条腿。

Mrs. Chen teaches         English. We like         class very much.

People often think the grass is always greener on _________ side of the fence (篱笆).     

①浓盐酸  ②浓硫酸  ③氢氧化钠溶液  ④食盐溶液   ⑤石灰水 （填序号）