![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
在横线上写出单词的正确形式。 1. There are some things that you can't change, like your (身高). 2. The seats have no back ____________ (紧靠着)which to lean. 3. A space sleeping bag is used to be fixed to the walls to prevent__________(漂浮). 4. We must do something to deal with the ___________ (污染) water, otherwise, the fish will die.