Chuyển danh từ thành dạng số nhiều: Studen the next three (chaper). Can you recommend some good (book). I have two (tooth) pulled out the other day

Chuyển danh từ thành dạng số nhiều:
​1. Studen the next three (chaper) ..........
2. Can you recommend some good (book) ..........
3. I have two (tooth) pulled out the other day..........
4. You can always hear (echo) in these mountains..........
5. They are proud of (son-in-law).........
6. Did you raise these (tomato) in your garden? ..........
7. I think we need two (radio) ..........
8. My (foot) really hurt ..........
9. The (roof) of these houses are tiled ...........
10. How many (day) are there in this month ? ..........
11. Get me two (loaf) of bread .........
12. The (mouse) were running all over the empty house ...........