Complete the letter with ‘should’, ‘shouldn’t’, ‘had better’ or ‘ought to’. 

Dear Reader,

I am happy you asked me for advice. If you want to become an innovator, you (1) __________ think about a problem you want to solve.

Since there are lots of problems in the world, it (2) ___________ be too hard! Remember, it takes a long time to solve a problem well, so you (3) __________ be patient.

Sincerely,

The Career Advisor