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III. Find and correct the mistakes.
Ex: 0. He don't like apples. Correct don't doesn't
1. I'm twenty-one year old and I'm a worker.
2. She and he goes to work on foot.
3. That's my sister over there. She stands next to the window.
4. Let's going shopping!
5. My friends doesn't like watch TV after school.
6. He is the tallest of the two boys.
7. There is an big eraser on the desk.
8. We aren't understand what you are saying.
9. How many mans are there in the room?
10. We can't go out because it rains.