Give the correct form of the verbs in past simple or past perfect tense

Exercise 4: Give the correct form of the verbs in past simple or past perfect tense.(30pts)
 

13. They (come)................. back home after they (finish)..................... their work.

14. She said that she (meet)......................... Mr.Bean before.

15. Before he (go)................................ to bed, he (read).............................. a novel.

16. He told me he (not/ wear).............................. such kind of clothes before.

17. When I came to the stadium, the match (start)........................................

18. Before she (listen)....................... to music, she had done her homework.

19. Last night, Peter (go)....................... to the supermarket before he went home.

20. When I got up this morning, my mom (already go)..................................... .