It is sometimes quite difficult to _____ between the truth and a lie.

Human cultures _____ widely all over the Earth.

 The issue of cultural

identity is _____ great importance.

A synonym to I think that is

A synonym  to such as / including is 

A synonym to on the whole is 

to become very interested, eager, or wanting (to do) something very much means

the fact of showing no care or respect for something is called

to waste money or supplies, or to waste opportunities by not using them to your advantage

means

to spend less money than you receive as income

means