3.__________________________________________________.

2.__________________________________________________.

1．________________________________________________.

21. A survey carried out at the end of 2003 suggests it does.

_______________________________________________________________________

. 用以上1, 2, 5, 9 11短语、句型造句)

20. Los Angeles, which was built with the motor car in mind , and is famous for its six –lane highways ,is now the USA’s most congested city.

　 _____________________________________________________________

19.Buses numbered 1 to 100 are limited to travel within the city centre.　 _____________________________________________________________________

18. Tricycles are worth using if you want to explore the narrow alleys of old Beijing .

　 _________________________________________________________________

翻译下面的句子(Translate the sentences19-21)

17. Trains are fast and convenient , but rush hours can be terrible.

_____________________________________________________________________.

16. Minibuses with seats for 12 passengers _______________( 提供了一种可以代替昂贵的出租汽车和拥挤的大型公交车的替代物) in some area.

解析下面的句子

15. However , there is also a night bus service , _______________( 由编号在200到300之间的提供的)