cho mình biết vì sao phải chọn đáp án này nha 

1.they need a lot of ( fertilize ) for their fields 

2. they ( mixture) the mashed paper and the water together yesterday 

3. the ( prevent ) of diasease is very improtant to us nowadays 

4. we can use a ( wood ) spoon to mash the paper 

5. linda is one of the ( represent) from friends of the earth