The mother with her son ________ at home ________ that snowy night.
| A．were; at | B．was; at | C．were; on | D．was; on |
—What do you plan to do on the ___________ May Day holiday?
—I have no idea. Probably, I will spend it by doing many papers.
| A．three-day | B．three-days | C．three days | D．three day’s |
—Excuse me, Mum. When can we have dinner?
—Not until it in half an hour.
| A．is prepared | B．will be prepared |
| C．has been prepared | D．was prepared |
—You see, “Food Safety” receives thousands of Internet hits a day.
—Obviously, it has become one of the _________ topics recently.
| A．interesting | B．hot | C．most interesting | D．hottest |
—Do you know that our school has been named Green Olympic Demonstration School?
—Yes. We are all excited ___________ that.
| A．at | B．for | C．about | D．with |
—You look so worried, what’s wrong?
—More and more people like me become to worry about the __________ pollution after the haze (雾霾) appeared in Beijing and some other cities in China.
| A．water | B．air | C．noise | D．Soil |