---______can I keep this book?
---One week.
A.How many B.How often C.How long
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 |
------You are leaving for Beijing Please send me a postcard _________ you are there.
------No problem.
| A．if | B．while | C．although | D．because |