Employees in a chemical factory should be given _____ training in safety.

(2014·石家庄高中复习教学质检)I always try to be________to others when walking my pet dog along a pavement and step to the side with my dog to let them pass by.

 Mr. Liu is very ______ with his students as he always tries to make his classes lively and interesting.

—The guard keeps         watch at the gate.—So he does. Only those         knows well could be let in.

As a manager, I know my emotions will affect people around me, so I’m going to make a  ____ effort to be more cheerful.