He’s not enthusiastic because he’s tired.              SO                    If.................. , he’d be more enthusiastic.

She won’t pass the exam because she doesn’t work hard enough.                HARDER                 If she worked ....................pass the test.

I missed the film because my train was late.   ARRIVED               If my train hadn’t been late, I................ time for the film.

Before I bought that bike, I should’ve gone for a ride on it. OUT                                                           I wish................ that bike before I bought it.

My advice to you is to change your job.   IF                                          I´d change.................... you.

I can’t tell you the answer because I don’t know it.      WOULD                                                  If I...............tell you.