Complete each sentence with either if or unless.


1.  If Unless (1 p.) you don’t have patience, you can’t be a good salesman.

2.  We don’t employ people if unless (1 p.) they are flexible and keen to work hard.

3.  If Unless (1 p.) you call to tell me you’re not coming, I’ll see you tomorrow afternoon.

4.  Don’t promise anything if unless (1 p.) you’re completely sure.

5.  Your presentation will be better if unless (1 p.) you make good eye contact with the audience.

6.  If Unless (1 p.) you increase sales by over 20%, the company will pay you a performance bonus.