-Is the man on the playground your English teacher? -It _________ be him. He has gone home.
—Don’t run in the hallways, boys. It’s too dangerous. —________.
One of the ________ in our class ________ from America.
—Please don’t _______, Tommy. Your sister is sleeping now. —OK, mom.
Tony is ______ lazy, and he is not good at learning English.
—What is he doing now? —He’s ________ the teacher in class now.