The problem is _____ difficult for me _____ solve.

People often think they are energetic and healthy and don’t need exercise. _______ , I have to warn that it is completely wrong.

Anyone, whether he is an official or a bus driver, should be ______ respected.

—Could you tell Lucy about the news when you see her?—Sure, I will ________ I see her. 

To tell the truth, his pronunciation is ___________ terrible.