Here are the answers to the questions based on the provided article about doing homework:

1. **Is it good to do homework late or early?**
- It is good to do homework early.

2. **When is it better for us to do homework?**
- It is better to do homework as soon as possible after the teacher has given it to you.

3. **Why do we have to turn off our mobile phone and the television when we are doing homework?**
- We need to turn off our mobile phone and the television because we work a lot faster without them.