Помогите составить 1 0 предложений с Past Simple и Past Perfect

Past perfect:
1)they thought that letters had been sent.
2)we saw that everybody had already gone.
3)i put on me clothes after i got up.
4)the students said that he hadn't done his homework.
5)when had the telephone rang?
6) Had mommy cooked the dinner when her children came home?
7)Had teacher checked the tests before she left for home?
8)our friends said that they hadn't passed the exams yet.
9) she hadn't ear anything before she went to bed.
10)If students had prepared for an exam they would pass it successfully.

Past simple:
1 He did it very well
2 I slept for two hours
3 I went to Italy last month
4 We played football
5 You did the right thing
6We were on holiday 7 She was really angry
8 The boys stayed at home
9 I went to the cinema yesterday evening
10 We had breakfast an hour