【单选题】
4. Our room must ___ clean.
【单选题】
The manager promised to keep me _____ of how our business was going on.
【单选题】
The manager promised to keep me ____ of how our business was going on.
【单选题】
9. The goal is to keep this land alive, to ______ animal population and keep it growing.
【单选题】
At the meeting they all kept ____.
【单选题】
You must clean the classroom, ____ you?
【单选题】
The ____ crown jewels are kept in the Tower of London.
【单选题】
-- Sorry I kept you waiting.
③
That’s all right. There’s no hurry
【单选题】
_____and wage increases have not kept in step.
【单选题】
Lets clean our classroom,________?