Dưới đây là các từ đã điền vào chỗ trống:

1. **make**
2. **study**
3. **more**
4. **are**
5. **more**

Vì vậy, câu hoàn chỉnh sẽ là:

"At weekends, I go to my favourite chat room and I chat. Sometimes I spend hours online and I often **make** new friends. My mum doesn’t go shopping anymore. She likes buying everything **more**. My sister likes music and she has joined a rock group on a webpage at her university. When I want to improve my English, there **are** a lot of great websites with vocabulary games and practice exercises. I usually **study** **more** points than my sister."