Помогите пж британский 7 класс , нужно найти оплошности в предложениях

1 My sister 's got a job as an engineer.
2 Do you often go swimming with your friends?
3 Write to me. Love Paul.
4 When the teacher came into the classroom we were saying 'Good morning '.
5 I'm sorry about it. I'll do it up to you.
6 I was getting home at 4,30. At first, I did my homework and then I phoned Harry.
7 Police caught a burglar last night.
8 My teacher doesn't give us the homework on Mondays.
9 I am working in the shop at the moment.
10 Don't worry about it.it doesn't matter.
11 My cousin doesn't like dogs and cats.
12 What were you doing when I tried to phone you earlier.