11. Nobody knows the time of shipment,______ ?

　　a. doesn’t he

　　b. does he

　　c. don’t you

　　d. do they

　　12. There has been a positive response to the export promotion,______?

　　a. hasn’t it

　　b. hasn’t there

　　c. doesn’t it

　　d. has there

　　13. Our firm is within ______ from the airport.

　　a. thirty minutes’ drive

　　b. a drive of thirty minutes

　　c. driving for thirty minutes

　　d. driving car by thirty minutes

　　14. The exhibition is held ______ our own expense and ______ last year’s prices.

　　a. for, at

　　b. for, with

　　c. at, at

　　d. for, for

　　15. Since the goods are ______ stock, they cannot be supplied______ stock.

　　a. out of, at

　　b. outside, from

　　c. without, from

　　d. out of, ex

　　16. Competition, we believe, ______the character of a firm rather than corrupt it.

　　a. enforces

　　b. confirms

　　c. intensifies

　　d. strengthens

　　17. Jim was about to sign the contract but I______.

　　a. put him through

　　b. turned him out

　　c. gave him up

　　d. cut him short

　　18. I have never been to Beijing, but it is the place______

　　a. where I’d like to visit

　　b. I most want to visit

　　c. in which I’d like to visit

　　d. that I want to visit it most

　　19. The words of the buyer left a ______ impression on his mind.

　　a. long

　　b. lively

　　c. lasting

　　d. liberal

　　20. The suggestion that the CEO ______ the prizes is welcomed by all.

　　a. would present

　　b. present

　　c. presents

　　d. ought to present