( ) 3. Mr. Wang his office since eight o'clock. I don't know where he is.
A. left
B. leave
C. has been away from
D. has left
3. C根据since可知该句用现在完成时;leave是短 暂性动词，不能和一段时间连用。故选C。
题目来源：仁爱英语同步练习簿九年级上下册 > Topic 3 The world has changed for the better.
夺冠金卷全能练考系列答案科目：初中英语 来源： 题型：
When the air in Beijing got " crazy bad"， as an American reporter described(描述)，one could hardly even see others across the street. During the 1_________,you can usual I make out (辨认出)the sun through the sky, but even at noon, the sun is just 2_________ a small white ball. Your clothes can get 3_________ after a day's walking. Clothes 4_________ like in an airport smoking waiting-room.
But it's not just Beijing. On Monday, in Zhejiang Province，south of Shanghai， 800 miles away，a factory was 5 _________fire，but the air pollution was 6_________ bad that for three hours no one noticed the smoke coming out of the factory. To our surprise, Beijing or a town in Zhejiang Province couldn't even 7 _________in China's top 10 cities of the worst air pollution. It's clear that air pollution has become one of China's biggest problems. 8_________ can hurt everyone. Something 9_________ be done to do with the bad air. The Chinese government has taken the first,step to admit(承认)that it is a 10_________ Beijing is able to make its air fresher, so people there can breathe a little easier soon.
( ) 1. A. day B. evening C. holiday D. week
( ) 2. A. on B. like C. for D. over
( ) 3. A. clean B. wet C. dry D. dirty
( ) 4. A. touch B. feel C. smell D. sound
( ) 5.A. on B. in C. at D.for
( ) 6. A. such B. too C. very D. so
( ) 7. A. arrive B. reach C. be D. get to
( ) 8. A. One B. It C. Ones D. They
( ) 9. A. may B. will C. would D. must
( ) 10. A. question B. beginning C. problem D. key
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