The key answer of exercise 8

a)

• Speaker 1: ✓; The film was really bad - life's too short.
• Speaker 2: ✗; You have to watch the whole film or you don't know if it's good or bad.
• Speaker 3: ✓; The film was really boring, and it was a beautiful day.
• Speaker 4: ✗; It's OK to fall asleep, but it's rude to other people to walk out.

b) -