I'd write something like "People are motivated to preform better if they're interested in their job"
Answer:
a
Explanation:
Many people believe that these "fairy dusts" are making a difference for them and addressing one of the claims brought up by those people could make this more effective of an argument
Answer:
Explanation:
The first one is complete and the tense of the verb is correct.
The second one is only wrong because of the verb tense.
Many of his customers keep coming back three or four times over the summer.
This one has the same problem.
His business has been so busy, that he has very little time for anything else.
