A________man rushed into the house on fire and saved two boys．
| A．brave |
| B．useless |
| C．nervous |
| D．scared |
— Morning, boys and girls! Please try your best in today’s exam! Good luck to all of you!
— ________
| A．Sorry, I won’t. | B．Never mind . | C．Thanks! | D．Congratulations! |
—Sir, could you please put out your cigarette? This is a smoke-free (无烟的) school.
—＿＿＿＿＿＿
| A．I'm sorry about this. | B．No problem. |
| C．Sure, I'd love to. | D．Never mind. |
—How often do you chat with your friends online?
—. I'm busy with my study.
| A．Only one month. | B．About twice a month. |
| C．Almost every day. | D．Maybe in two weeks. |
the children have fun, parents can take dance lessons on the beach.
| A．When | B．If | C．While | D．Once |
The World Health Organization has given some advice onto protect us from being infected(感染） with H7N9.
| A．how | B．what | C．where | D．when |