IV. Find the mistake in each of the following sentences and correct it.

1. Is Hung and his brother working in the garden now? *

2. Let walk to school today. *

3. What about play tennis now? *

4. I'm going stay with my uncle and aunt. *

5. I want talk to her because she is very nice. *

6. They are going to taking some photos at the beach. *

7. How often does he plays volleyball in the summer? *

8. They never go swimming in the winter because it's very hot. *

9. How many is a kilo of rice? *