May I speak to the headmaster?—He ____ a meeting now. Can I take a message?
____ are good friends. We’re in the same class.
He __________ to come to the teacher’s office.
A lot of trees and flowers are on ______ of the river and the number of them is growing ______.
Though he didn’t ________an important position, he got along very well with almost everybody and was trusted by most of his leaders.