During the Vietnam war, some people claimed to be a conscientious objectors.He made a conscientious effort to find the little boy's parents.In daily life, we often have to decide between the...

a conscience worker a conscience piece of work means showing great care, attention, or seriousness of purpose.

When it has a subject, verb, punctuation, capitalization, a predicate, and a complete thought. A sentence is a sentence when it is handed down by a judge (or a magistrate).

She was a conscientious student who spent hours studying and reviewing her notes.

This is one of a series of questions copied from Penn-Foster's "Practical English" quiz.There is no answer here.