He is dishonest，so I really can't ______ what he says to what he does.

 I_______ laughing when my son made a face.

The government has decided to give preference to those environmently-friendly business and companies in all aspects in _______ of sustainable development.

The water and soil conservation project resulted in farmers ______ the crops on the farmland  _____ trees and grass.

The police officers here do not usually_____ guns.