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.

I don’t know if I _______ free tomorrow. If I _______, I will go to the bookstore.

Tom! Corey has broken the glass. — ______. Such things happen.

Where did you find Lily?— It is in the bookstore _________ she is working _________ I found her.

two centimeters higher, _______ break the world record,” encouraged the coach.