The key answer of exercise 4
The key to exercise solutions in chapter 5D - First conditional for the textbook Solutions Pre-Intermediate - Workbook with authors Tim Falla and Paul A. Davies from Oxford University Press
Question
Now write a dialogue like the one in exercise 3. Use the chain of ideas below.
Answer
... spend all my money, I’ll have to stay in on Friday night.
If I have to stay in, I won’t see Connor.
if I don’t see Connor, he won’t invite me to the barbecue.
If he doesn’t invite me to the barbecue, I won’t see his sister again!