---_____ stand on the chair. ---I’m sorry.A. Please B. Don’t C. Not
It’s grandma’s birthday _______ Sunday. A. in B. on
I’ll try my best _____ help you. A. on B. to
What’s the matter ________ you? A. to B. with
I prefer ______ a comedy. A. to see B. see
Come to my flat _______ 9:00 ________ the morning. A. in… at B. at … in