By the time I locked the door, I realized I ________ my keys at home.
| A．had repaired | B．had changed |
| C．had forgotten | D．had left |
Jack______ books in the library at 4 pm yesterday afternoon.
| A．read | B．reads | C．was reading | D．has read |
We______ a school trip next Wednesday if it is fine.
| A．will have | B．have | C．had | D．have had |
There isn't ______ in the classroom. Let’s turn off the lights.
| A．everybody | B．nobody | C．somebody | D．anybody |
Something was wrong with my bike, ______ I was late for school.
| A．but | B．so | C．or | D．for |
—Where is your Chinese teacher?
—He’s ______the meeting room.
| A．on | B．of | C．to | D．in |