who________here on time.

　　A．has come, have come

　　B．have come，has come

　　C．has come，has come

　　D．have come，have come

答案 B [本题考查定语从句中的主谓一致。当先行词在从句中作主语时，从句的谓语动词的数必须在人称和数上与之保持一致。在"one of＋名词"结构中，通常名词是先行词，但在"the only one of＋名词"结构中，one是先行词。所以第一个空先行词是boys，故谓语用have come，而第二个空的先行词是one，故谓语用has come。]

8．After the explosion，the policemen have appealed for ________to come forward.

A．directors B．views

C．applicants D．witnesses

答案　D　[句意：爆炸发生后，警察呼吁目击者主动提供信息。witness目击者，符合句意。]

9．-You didn't lose the train ticket，did you?

-________.I know it's not easy to get another one now.

A．I am afraid not B．I think no

C．I hope so D．I hope not

答案　D　[答语提到现在再得到一张火车票不容易，由此可知答话人不希望这样。"I hope not"表示"我希望不是这样"。]

10．Your dreams will come true ________you make great efforts and put emphasis on

improvements in efficiency.

A．on condition that B．as far as

C．even though D．in case

答案　A　[考查词组辨析。on condition that表示"条件是"；as far as表示"就......而言"；even though 表示"即使"；in case 表示"万一，以免"。根据语意"只要努力并把重心放在提高效率上，你就会梦想成真"可知选A。]

11．The monitor suggested that we________for a picnic on Sunday.

　　A．went B．must go

　　C．could go D．go

答案 D [本题考查虚拟语气。suggest作"建议"讲后接宾语从句要用虚拟语气，即"should＋动词原形"，should可以省略。所以选D项。]

12．High­speed trains travel at 300 kilometres an hour，which is about

________normal trains.