Here are the correct forms of the verbs for each sentence:

1. An is a Grade 8 student and he **adores** reading in his free time. He wants to become a scientist in the future.
2. I **will send** messages to my friends tomorrow.
3. Anh is in the classroom. She **is writing** an article about leisure activities.
4. Last weekend, my family **spent** two days **repainting** my house.

Feel free to ask if you need further explanations!