—Where did you get The Frog written by Mo Yan?
—I picked it up from a bookshop online if you ________ know.
| A．must | B．will |
| C．can | D．shall |
I _____ to him for what I said.
| A．excused | B．apologized | C．pardoned | D．explained |
_____ at the door before you come into the room.
| A．Hit | B．Knock | C．Touch | D．Strike |
I've _____ my things at home.
| A．forget | B．forgotten | C．left | D．lost |
The city's underground _____ more people than the buses.
| A．brings | B．sends | C．fetches | D．carries |
She _____ me to open the door.
| A．posted | B．noticed | C．signed | D．drilled |