Going on a trip into        space must be quite         exciting experience.

   A. / ; the           B. the; the          C. the; an            D./ ; an

--Excuse me,_________?   --That’s ￡200 altogether, sir.

A. what does it cost               B. is it the right amount  

C. could I have the bill           D. can I place an order

He did not regret saying what he did but felt that he _____ it differently.

A. could express                B. would express  

C. could have expressed         D. must have expressed

There are _____ products to be sold in the factory store. Which of the following is not correct?

A. a large number of     B. a large amount of    C. quantities of      D. a great many

The government has to close those small factories to prevent the water of the river ______.

A. polluting        B. from polluting        C. being polluted       D. polluted

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

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

—Can you give me some advice on what I said just now?

    —Sorry, my mind _____．

   A． has wondered B． had wondered    C． is wondering    D． was wondering

The 3G cell-phone must be of great use to ____wants to get the information through the

Internet quickly．

    A． who     B． whoever C． whomever    D． whichever

Though iPhone 4 is such a hit product, I won’t buy one unless its after service ______.

A. was improved     B. gets improved    C. is improving      D. had got improved

—Where is the shooting centre?

—It is about 50 kilometres ______ the city of Beijing.

A. in south of          B. south of         C. the south of     D. southern of