Британский язык 8 класс . Прямые о косвенные предложения, помогите пожалуйста

1. the students said to teacher that they wont pass her exams next Tuesday and to give them one more day
2. mother asked her daughter that had she heard a good news today?
3. he asked the shop assistant that how much did that sweater cost
4. my friend said to me that they are going to theatre next week
5. they asked him that had he visit China last year
6. Sandy asked Ben that where had he stay in Moscow
7. Mother said to her to speak with a low voice. because the baby was sleeping
8. the woman said to her son that she was glad she was there.
9. Mike said that they had bought that books