1. If Tom hadn't broken his leg, he would have gone on holiday with us.

2. Helen would have sent you an email if she had had your address.

3. Would you have studied at the weekend if you had known about the test?

4. Would you have passed the exam if you had answered this question correctly?

5. If Mary hadn't organised that protest march, we wouldn't have gone.

6. If Lisa had driven more slowly, she wouldn't have had an accident.