Sure! Here are sentences using the provided words and phrases:

1. This is the first week at my new school.
2. My new school is big, and it has a large library.
3. I usually do my homework in the school library.
4. I have lots of friends, and they're all nice to me.
5. We have many subjects, and my favorite subject is science.
6. In the afternoon, I play sports at the playground.
7. My friends and I are playing basketball at the moment.