–Have you heard of the big fire last night?
--Yes. The firemen struggled against it for about 35 minutes and _______ the fire at last.
A. gave up B. gave out C. put out D. put up
The students all looked ______ at me when I told them that they would have one more day off.
A. sad B. sadly C. happy D. happily
–Is the modern racing car outside ______, Lucia?
--Of course not. Nobody but Jim can afford such an expensive car. It must belong to ______.
A. your, his B. yours, he C. your, him D. yours, him
–How can I improve my study in the last thirty days?
--________ listening to the teacher carefully in class. This is the most efficient way!
A. By B. On C. Past D. Across
To do some voluntary work for the 2nd Youth Olympic Games is ______ excellent chance for us to serve our hometown—Nanjing.
A. a B. an C. the D. 不填
根据下列提示，以Earth Hour为题写一篇短文，宣传这一倍受全球瞩目的环保活动。
1.始于2007年3月31日，悉尼超过220万家庭在晚上7：30同时熄灯。
2.目的：节约能源 改善气候
3.2011年3月26日20：30—21：30全球越来越多人通过与家人共进烛光晚餐或与朋友聊天来参与活动。你是如何参与的？
4.今年的活动不仅提倡熄灯，更是号召大家在日常生活中响应环保。为你的同学们提些建议如何响应这一号召？
注意：要包含所有要点但不要逐句翻译。词数80左右。
