_Who is _____ English teacher, Lu Yu? _ Mr Tian teaches _______ English.

Someone is knocking at the door. Who may it be? —It ______ be Tom. He is still in the school.

Dad, must we wait until the light becomes green? — Yes, I’m afraid we ______. That’s the traffic rule.

Look! What’s happening there?—Must be an accident. Call 112 or 110 _____ the phone right now.[ ]

Mike , you look so excited.—Yeah! There a tennis game played by Li Na this evening.