Fill in the gaps in the conversations with these words and phrases.
(couldn't/i'll/worry/oh,dear/have to/had to/another time/ happened/i'm sorry).
1)i for an exam.
2) don'
3)i'm sorry i you last night. was feeling ill so i went to bed early.
4) are you all right now ?
5) i didn't come round last night.
6) oh,right.
7) you this evening.i promise.