The key to exercise solutions in chapter 9.5 - Lookback for the textbook Speakout Elementary - Students' Book with authors Frances Eales and Steve Oakes from Pearson Education
Question
Write out the conversations.
Answer
Monday
A: I'm sorry I'm late. I didn't hear the alarm clock.
B: That's OK. No problem.
Tuesday
A: I'm terribly sorry I'm late. I missed the train and the next train was late.
B: Don't worry about it.
Wednesday
A: I'm so sorry to be late. I lost the car keys and then the car wouldn't start.