Without your advice, I wouldn’t be here today. BUT I wouldn’t be here today ___________.

If you hadn’t delayed us, we’d have caught the train. FOR We’d have caught the train had_______ your delay.

If the bus hadn’t been late, we’d be home by now. BEEN Were ____________ late, we’d be home by now.

If you should need any assistance, please ring this number. HAPPEN If you should _______ any assistance, please ring this number.

It’s possible he’ll come — if he does, tell him to wait for me. HAPPEN If he __________, tell him to wait for me.

If I had studied harder, I’d be at university now. STUDIED Had ___________, I’d be at university now.

You might fail the test if you don’t revise properly. SHOULD You might fail the test _______ to revise properly.

If you hadn’t helped me, I’d have failed the exam. BUT I’d have ___________ your help.

If you see Mark, can you ask him to call me? HAPPEN If you _______ Mark, can you ask him to call me?

If I had known about the sale, I would have bought a new coat. BEEN Had I __________ the sale, I would have bought a new coat.

If I had taken that opportunity, my life would be completely different now. WERE If I _______ that opportunity, my life would be completely different now.

I’d love to help you, but I have to work late tonight. WERE If I _______ work late tonight, I’d love to help you.

I didn’t go to the meeting because nobody told me about it. BEEN Had _________ about the meeting, I would have gone.