–Look! The man at the gate ____ be our headmaster. He is always standing there every morning.-- No, it _____ be him. He is holding a meeting in the office now.
— May I take the magazine out of the reading room? — No, you can’t. You _________ read it here. It’s the rule.
— If there are _____people driving, there will be ______air pollution. — Yes, the air will be fresher.
_______ Mary ______ John has been to China before, but they know a lot about it
Our music teacher has won the first prize in the competition. We’re very _______ him.
-- Hello! Would you like to go to the party with me tonight? --I’m sorry I can’t . Mother won’t ______me to go out in the evening.