One disadvantage of using a company’s tuition reimbursement program is that you may have to extend your contract with the company
You develop mature relationships with other by being trustful and respectful to the other person. Don't be jealous to what they have. Don't hold grudges on them. You should also give them privacy.
I believe a "a bird" is a subject because I did process of elimination. It can't be a verb, because you cannot "do a bird." It depends what the context of the sentence is as well. Is there a clear object, or subject? Otherwise, I would say subject.
1800s because of the attire