to miss and to lose class 1st

http://www.englishlearnsite.com/vocabulary/differences-between-miss-and-lose-with-examples/

Questions about the dialogue page 58

1. Who is Oliver's mum talking to?
2. Why is Oliver's mum worried?
3. How long does Oliver spend doing homework?
4. Is Oliver doing well at school?
5. Does Oliver often go out with friends at night?
6. What is Oliver worried about?