13、I had not been waiting very long _____ he returned from the conference in the town.

A．until     B．a(chǎn)fter            C．while          D．before

12、—Joan _____ a month's vacation.

—That's nice．If time permits, I will go with her.

A．is taking           B．was taking          C．has taken          D．took

11、By using the air ambulance to transport patients _____ hospitals, they can win more time for serious cases.

A．inside            B．during         C．through             D．between

9、The new government should        finding solutions to the country’s economic problems．

A．set out           B．set about            C．set down           D．set off

8、一Wow, so many books here! How can you find the one I need?

一That’s easy．The books are        by subject．

A．judged           B．remarked           C．classified            D．furnished

7、While         to foreigners，you must try to make yourself          by using body language if necessary．

 A．speaking；understood                     B．spoken；understand

 C．speaking；understand                        D．spoken；understood

6、We haven’t seen each other for many years，so I am quite        the plan that we have a party this weekend．

A．in terms of            B．in honour of          C．in favour of            D．in need of

5、Rain is pouring down from the sky without any sign of stopping．Farmers begin to worry about their crops since it         as long as 24 hours．

A．has been raining          B．had rained           C．was raining         D．will rain

4、         is known to us all is that Shanghai will host the 2010 World Expo．

A．As                B．It            C．That                D．What