![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![upload_2020-2-3_22-49-49.jpeg upload_2020-2-3_22-49-49.jpeg](https://s3.icankid.io/hmo-forum/data/attachments/142/142507-7074ed7639cb3f3e635766acaac12ede.jpg)
6/ Unless we don’t take steps to preserve natural resources, the planet will be in danger.
7/ If you had studied hard, you wouldn’t get bad marks now.!!!!!
8/ Because it was stormy they couldn’t climb up the mountain.
9/ Tortoises are said to live longer than elephants.
10/ I was made to do it by my parents.
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