If you leave now,
If you get that new job,
If I don't see you this afternoon,
What will you do
If I lend you this book,
If you don't go to the party,
If you miss the last bus,
The ticket will be cheaper
You won't pass your driving test
You'll learn more quickly
you can take a taxi
you won't meet new people
you'll catch the 8:00 train
will you give it back to me soon?
will you earn more money?
if you don't take enough lessons
if you travel after 9:00
I'll call you this evening
if he doesn't call you?
if you come to every class