He finished his homework and then he went out with his friends

16. He finished his homework and then he went out with his friends. =>
Having_________________________________________________
17. After he had got up, he brushed his teeth. (Perfect participles) => ________________________________________________________
18. The factory has dumped a huge amount of rubbish into the river. It was fined for that. => ________________________________________________________
19. After I finished all my homework, I watched my favorite film on TV.
nhahh nnhứa cho 5 điểm