Correct the mistakes in the following sentences:

1. He wanted to know where i am going to the following Monday

2. if they wanting to leave the institute, let them go

3. The chinese have invited printing a long time ago

4. we musst make a quick deciding who will take the exam

5. I wish it will stop raining for our class to go out for the picnic

6. They said they would go to that city next year

7. Phuong Thanh has been a good musician from 1990 to 2000

8. One of important skills in learning language are writing

9. you'd better learn with heart the words you study day by day

10. My sister isn't at home. She went shopping at present.