A．keep B．catch C．hold D．take

答案　D　[句意：出租车司机经常提醒乘客下车时要把自己的东西带走。]

12．The ancient vase is ________，so you must take good care of it.

A．value B．of valuable C．of value D．valued

答案　C　[be of value＝be valuable"有价值的，贵的"。]

13．________the safety of gas，the government has checked the city's gas supply system thoroughly.

　　A．To ensure B．Ensuring

　　C．Having ensured D．To have ensured

答案　A　[考查非谓语动词。从上下文和语义判断，空格处应表示目的，而目的状语常用动词不定式来表示，因此排除B、C两项；又根据句意可知这一动作不是发生在过去，故不能用不定式的完成式。]

14．If you want to see a doctor，you'll fix a date with him ahead of time.That is a common________in the USA.

　　A．habit B．practice

　　C．custom D．manner

答案　B　[句意：如果你想看医生，就要提前约定一个日期。这在美国是一个常见的做法。空缺处意为"习惯；惯例；做法"，只有practice可表达此意。]

15．We ________last night，but we went to appreciate the flowerbeds and streetlights

inTian'anmen Square instead.

A．might study B．could study

C．should have studied D．must have studied

答案　C　[考查虚拟语气。依据题干中的last night可知，A、B两项错误，此处不是表猜测；而must have done表示"一定做过某事"，不符合句意；should have done sth表示"本应该做某事而没做"。]

Ⅱ.完形填空

James's New Bicycle

James shook his money box again.Nothing！He carefully__16__the coins that lay on the bed.24.52 was all that he had.The bicycle he wanted was at least $90！__17__on earth was he going to get the__18__of the money?

He knew that his friends all had bicycles.It was__19__to hang around with people when you were the only one without wheels.He thought about what he could do.There was no__20__asking