4.【解析】选A。考查动词短语辨析。句意: 由于销售额的下降, 公司马上要裁员150名。lay off解雇, 裁员。

　　5. 【解析】选A。考查虚拟语气。句意: 要不是因为警察赶到, 我就被两个蒙面人抢劫了。与过去事实相反的虚拟语气结构为: If sb. had done sth. , sb. would have done sth. , 虚拟条件句中的if可省略, 且要进行部分倒装。Had it not been for相当于If it

　　had not been for。

　　6.【解析】选B。award sb. sth. for. . . 表示“因为……而授予某人某物”。reward“回报”; praise“表扬”, 用于praise sb. for sth. ; prize只作名词。

　　Ⅱ. 1. disgusting

　　2. passers-by

　　3. reservation

　　4. admission

　　5. changeable

　　Ⅲ. 1. Hardly had we sat down

　　2. commit yourself

　　3. in reward for

　　4. It took me twenty minutes to read the book

　　5. was off to

　　Ⅳ. 【参考范文】

　　Last week, we were off to the gallery, where many abstract oil paintings, ranging from the 13th century to the 20th century, were exhibited. And many of them are worth upwards of millions of dollars each. Because of admission free, it was calculated that there were 5, 000 people going there to enjoy the beautiful oil paintings. We bought some souvenirs and it took us half an hour to go home by bus, and hardly had we got home when it began to rain heavily.

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