If you aren't feeling strong, ... a you aren't arguing. b it's best to avoid any arguments. c don't get into any arguments.

I didn't know it was a private event, so I decided to come. HAD ______, I wouldn't have come.

Get in touch with me as soon as possible if you change your mind about the trip. SHOULD _________ trip, get in touch with me as soon as possible.

Even if you don't believe me, take my advice and get out of that relationship fast!---> Take my advice and get out of that relationship fast, _ _ _ _ or not you believe me.

Tim would never have been so successful if Kelly hadn't given him so much help. Tim would never have been so successful ________ Kelly's help.

If I were in your shoes, ... a I'd have said something by now. b I'm going to say something. c I'll say something.

Being able to understand the guidebook might have spared us the embarrassment of finding ourselves on a nudist beach. HAD ______ we might have been spared the embarrassment of finding ourselves on a nudist beach.

The conference wouldn't have been a success ... a if he hadn't contributed. b if his contribution was better. c but for his brilliant contribution.

You'll have a great time at the village carnival as long as you don't let the local wine go to your head. PROVIDED ______ go to your head, you'll have a great time at the village carnival.

Owing to the hospitality of the local people, our stay on the island wasn't such a nightmare. BUT ______ our stay on the island would have been a nightmare.

Local people will take kindly to you on condition you show consideration for their customs. UNLESS ______, local people won't take kindly to you.

I wouldn't have spoken to him ... a if I hadn't wanted to. b if he wanted to. c if it hadn't been for you.