If Rita opens /will open a boutique in the High Street, she’ll make lots of money. If the economy doesn’t improve, lots of businesses will close / would close down. This burglar alarm is so sensitive: it goes off if a mouse runs / will run across the floor. George may go to prison unless he won’t pay / pays his taxes. The company was / would be more successful if it spent more money on advertising. If the employees of a company are/were happy, they work harder. We might sell our business if it makes / would make another loss this year. It looks like Molly’ll be okay, unless something new will happen / happens. Unless Shelly had read him wrong, Jack would find /would have found her unorthodox approach irresistible. Mat would not trust/ didn’t trust that unless he had to.