Ответ:

1. My brother is always complaining about me to my parents.

2. In our house we always eat dinner together and I like it.

3. My stepsister plays the piano and she knows hundreds of songs.

4. I think Mum has a shower. She usually has a shower at this time.

5. My relationship with my sister is getting better.

6. I don't believe everything my brother tells me.