![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
8. Did all students attend first-aid course last year. .................................................................................................................................................
9. Farmer can milk cows twice a day. .................................................................................................................................................
10. No one helped him do his homework.
.................................................................................................................................................
32. How can we keep our fields in good condition?
..............................................................................................................
Giúp e với ạ
9. Farmer can milk cows twice a day. .................................................................................................................................................
10. No one helped him do his homework.
.................................................................................................................................................
32. How can we keep our fields in good condition?
..............................................................................................................
Giúp e với ạ