Please open a window _________ turning on air conditioning.
A. instead of B. instead C. not D. rather
In those days ,books could only be produced one at a time _____________.
A. in hand B. with hand
C. by hand D. by hands
Food safety is important. Rules _____ to stop people from food pollution.
A. must make B. must be made C. mustn’t make D. mustn’t be made
—Why don’t we start a school magazine on line?
—________
A. Sounds like a good idea! B. It doesn’t matter.
C. Thanks for your help. D. Sorry to hear that.
The sign 
means _________
A. No parking B. No right turn
C. You can’t turn left D. No entry
--- --Who won _______prize for the “Most Beautiful Nature”photography?
------______18-year-old girl.
A. the; A B. a; A
C. the; An D. a; An
