Verbs like am, is, are, was, were do not show action; they are verbs of being. They tell us about a state of being or existence. They don’t give any meaning but they are used to describe a subject. The be verbs are followed by a noun or an adjective or an adverb.
In the introduction but it depends where you think your thesis would make your essay more understandable.
I think it's appropriate.That is to say, students should not use mobile phones in class unless the teacher allows.But they should be allowed to bring cell phones to school, because their parents can look for their children at any time.lanation:
Okay you too :))))))))))))))))
Clarify question more, please
