If Rita opens /will open a boutique in the High Street,

If Rita opens /will open a boutique in the High Street, shell make lots of money.
If the economy doesnt 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 wont 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 Mollyll 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/ didnt trust that unless he had to.