33．A clean environment can help the city bid for the Olympics, which ________ will promote its economic development．

　　　 A．in nature　　 　　　 B．in return　 　　　 C．in turn　 　　　　　　 D．in fact

32．Letterboxes are much more ________ in the UK than in the US, where most people have a mailbox instead．

　　　 A．common　　　　　　　 B．normal　　　　　　　 C．ordinary　　　　　　　 D．usual

31．I’d appreciate _________ if you would like to teach me how to use the computer．

　　　 A．that　 　　　　　　　　 B．it　 　　　　　　　　 C．this　 　　　　　　　　 D．you

30．-What's the name?

- Khulaifi．_______ I spell that for you?

A．Shall 　　　　　　　　 B．Would 　　　　　　 C．Can 　　　　　　　　　　 D．Might

29．So difficult 　　　　　　it to work out the problem that I decided to ask Tom for advice．

　 A．I did find　　 　　　 B．I have found 　　 C．did I find　　 　　　 D．have I found

28．The rescue workers were working around the clock, ________ supplies to Yushu Qinghai Province after the earthquake．

　　　 A．to send　　　　　　　　 B．sending　　　　　　　 C．having sent　　　　　 D．to have sent

27．After the earthquake, the first thing the local government did was to provide 　　　　　　for the homeless families．

　　　 A．accommodation 　 B．occupation　　　 C．equipment　　　 D．furniture．

26．________ this cake, you'll need 2 eggs, 175 g sugar and 175 g flour．

　　 A．Having made　　　 B．Make　　　 　　　 C．To make　　 　　　　 D．Making

25．Although the causes of cancer ________, we do not yet have any practical way to prevent it．

　　　 A．have uncovered　 　 B．have been uncovering　

　　　 C．are uncovering　　　　 　　　　　　　　　　　 D．are being uncovered

24．Someone who lacks staying power and perseverance is unlikely to _________ a good researcher．

　　　 A．make　 　　　　　　　 B．turn　 　　　　　　　 C．get　　 　　　　　　　　 D．grow