3．C本题是数词用法的考查。分数词的分子是基数词，分母是序数词。分子除了1以外，分母的序数词要用复数。

2．C本题是形容词知识的考查。famous是描绘性形容词，应放在前面，American 指的是国籍，放在young之后。

1．C本题是冠词的考查。have a wonderful time就相当于have a good time；the other

day表示“前几天”。

30．Mary ___________to see you．She．_________ for you downstairs at the moment．

A．has come；is waiting　　　　　　 B．came；is waiting

C．has come；waited　　　　　　　　 D．came；was waiting

答案详解：　

29．__________ in thought，he almost ran into the car in front of him．

A．Losing　　　　 B．Having lost　　 C．Lost　　　 D．To　

28．_____________to somebody，a British person often shakes hands with the stranger.

A．Introducing　　　　　　　　　 B．To introduce

C．To be int．roduced　　　　　　 D．On being introduced　　 。

27．D0 you consider it any good__________the truck again?　

A．to repair　　　　　　　　　　 B．repairing　

C．repaired　　　　　　　　　　　 D．being repairing

26．The bad weather meant__________ the rocket launch(发射)for 48 hours,．

A.delaying　　　　　　　　　　　 B．having delayed　

C.to delay　　　　　　　　　　 　　D．to have delayed

25. She was afraid __________ the dog in case it became dangerous.

A. of exciting　　　　　　　　　 B. to excite

C. that she excited　　　　　　　 D. to be exciting

24. We're leaving at six o'clock ,and hope_________ most of the journey by lunch time.

A. to do　　 B. to have done　　 C. to make　　 D. to have made