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.