Here are the correct forms of the verbs in brackets:

1. She **is staying** in Hue tomorrow night.
2. My mother **is planting** flowers in the garden at the moment.
3. Why **are** you **leaving** the party early tomorrow?
4. Minh **is going** to the dentist tomorrow morning.
5. He **played** the piano when he **was** three.
6. I **brush** my teeth every night, but last night I **forgot** to brush them.
7. You **are going** to bed early in 20 minutes.
8. Lan **is** very tired now because she **caught** a bad cold.
9. I hope she **feels** better soon.
10. She **needs** to **eat** a lot of vegetables and fruit.
11. He **will not come** to the meeting next week.
12. There **is** nobody in the room now.
13. Basketball **has become** very popular all around the world in 20 years.
14. My uncle **is giving** a talk about saving energy at the moment.
15. Take care of the child! He **is crying** in the room.
16. The children **will come** back by six o’clock next Monday.
17. Susan **does not like** riding. She **prefers** walking.
18. I’d like to **tell** you something about myself.
19. Nga **likes** to **watch** programs about teenagers in other countries.
20. Max **puts** low energy light bulbs in the classroom now.