Đáp án:

1. play→to play

2. shop→shopping

3. buy→buying

4. join→joined

5. improving→improve

Giải thích các bước giải:

Like most people, I turn on my laptop play as well as to study. At weekends, I go to my favourite chat rooms and I chat.

Sometimes I spend hours online and I often make new friends. My mum doesn't go shop anymore. She likes buy everything online. My sister likes music and she has join a rock group which she found on a webpage at her university.

When I want to improving my English, there are a lot of great websites with vocabulary games and practice exercises. I usually score more points than my sister!