用所给单词的适当形式填空. 2.Three------(quarter) of the earth is covered

用所给单词的适当形式填空. 2.Three------(quarter) of the earth is covered with water.
3.We can see a lot of------(pollute) everywhere.
4.We must stop------(throw) a lot rubbish everywhere.
5.It is important for us------(learn) English.
6.There are many mountains and------(field) on earth.
7.Burning things to make energy can------(pollutes) the air.
8.It is about 10------(kilometre) from my home to the school.
9.Don't------(put) rubbish in our classroom!
10.It is------(importance) for us to get up early and go to bed early.
请大家帮我一下，谢谢