31. I have my breakfast before I brush my teeth.
32. I get up when my alarm clock rings.
33. On Saturdays we have lunch before we go shopping.
34. He watches a film on TV; after that he goes to bed.
35. They always leave out food for the cat but they leave the house.
Ответ: 31. before, 32. when, 33. before, 34. after that, 35. but