I’ll lend you my dancing shoes ______________ condition that you clean them immediately after the show.

They agreed to sponsor our show but only if we put their logo on the curtain. They agreed to sponsor our show on _______________ __________________________________ their logo on the curtain.

I’m going to write this novel ______________ or not anyone wants to read it.

I wouldn’t have had the courage if I’d known in advance how difficult it was going to be. Had _________________________________________ how difficult it was going to be, I wouldn’t have had the courage.

You can have my guitar for the concert ______________ long as you don’t let anyone else touch it.

Don’t even think of making a film if you’re not prepared to work harder than you can imagine. Don’t even think of making a film unless _____________ _____________________________ harder than you can imagine.

______________ you wish to come to the opening night of our new production, we’d be honoured to offer you premium seats.

She could have become a professional dancer if she’d started earlier. Had ________________________________ , she could have become a professional dancer.

If any journalist wants to talk to the conductor, tell them she’s not here! Should _______________________________________ to the conductor, tell them she’s not here!

There’s no point in trying to become a writer if you don’t really want to do it. There’s no point in trying to become a writer unless _____________________________________________.

______________ for the financial help we got from the city, the exhibition would have been impossible.

Everything should be OK provided ______________ there isn’t a power failure.