—Is Mary coming by plane?—He should ,but he _____not. He likes traveling by train.

---- I have taken someone else’s T-shirt by mistake. Is it Jane’s? ---- It _______ be hers. She seldom wears red.

 The red bike _______be Hu’s. She has a blue bike.

As a student, you must ______ your teachers.

—         you speak Chinese, Miss Green?— Yes, I can.