That man ________ be Mary’s father, as he is much taller.

Take your swimming suit because you __________ want to go swimming in the sea. 

Why______ you do everything as if you have to win?

—It's no easy task to catch a ticket on a website that receives 1 billion clicks daily.—I can't agree with you more. There ________ be errors for every single step.

You _____ her in her office last Friday, she’s been out of town for two weeks.