A．before B．until C．as D．the moment

40．He does so little work in the office that for all practical purposes it would make no difference _______ he didn't come.

A．if B．when C．why D．whether

41．Asia has achieved more in controlling the bird flu than Europe in the past few years, _______ the number of people infected with the virus is going up sharply.

A．when B．that C．so that D．where

42．- Oh, life is so boring!

-Please don't think so . I suppose you've come to the point _______ a change is needed.

A．where B．when C．which D．as

43．- I can't find Mr Brown. Where did you meet him this morning?

-It was in the hotel _______ he stayed.

A．that B．which C．where D．when

44．The employers often give the job to _______ they believe have work experience with a strong sense of duty.

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

45．- Let's go to a place _______ we can make a round-trip in one day?

-What about one _______ we can climb and swim?

A．to which; where B．where; where C．where; in which D．in which; where

46．I don't doubt ________ the plan will be well-conceived.

A．that B．whether C．why D．when

47．-Lucy doesn't seem to be what she was.

-No. so much in the war has made her more thoughtful.

A．Seen B．Her seeing C．Having seen D．To have seen

48． twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

A．Examining B．Examined C．Being examined D．Having been examined

49．It seemed a pity they ate it after all the trouble they had in making it.

A．met B．shared C．taken D．made