Complete the type 2 or 3, as in 1. 1 If I knew you 2 If the plane 3 If the dentist 4 If Oliver had 5 If Jess had been 6 If you start

1. If I knew you, I would have come. 2. If the plane hadn't crashed, 3. If the dentist hadn't been busy, 4. If Oliver had studied, 5. If Jess had been braver, 6. If you start over,