Unit 5 Nelson Mandela-a modern hero grammar课时作业

　　Ⅰ.单项填空

　　1．John Smith，_____________________the organization he works for，made an impressive speech at the opening ceremony.

　　A．honoring B．mentioning

　　C．admiring D．representing

　　解析：　句意为：John Smith代表他工作的组织在开幕式上作了一次令人印象深刻的演讲。represent代表，符合句意。

　　答案：　D

　　2．____________with the difficult situation，Lucy decided to ask her teacher for advice.

　　A．To face B．Having faced

　　C．Faced D．Facing

　　解析：　句意为：面对困难的形势，露西决定向她的老师征求建议。be faced with面临；面对，此处faced with为过去分词作时间状语。

　　答案：　C

　　3．(2012·辽宁卷)Leave your key with a neighbor____________you lock yourself out one day.

　　A．ever since B．ever if

　　C．soon after D．in case

　　解析：　句意为：把你的钥匙留给邻居，以防有一天把你自己锁在门外。in case引导目的状语从句，意为"以防万一"，符合句意。ever since引导时间状语从句，意思是"自从"；even if引导让步状语从句，意思是"即使"。

　　答案：　D

　　4．It's the custom that the last person ____________the company should close all the doors and windows.

　　A．leaved B．leaves

　　C．to leave D．leaving

　　解析：　句意为：这是一项惯例，最后一个离开公司的人应该关好所有的门窗。当序数词或由序数词所修饰的名词后带定语时，由不定式充当。

　　答案：　C

5．The sky is clear，so it's not____________to rain this afternoon.