30、________ of the land in that county ________ covered with trees and grass.

A. Two fifth…is      B. Two fifth…are    C. Two fifths…is       D. Two fifths…are

29、 It is about time the government ______ proper steps to solve the traffic problems.

A. takes                 B. to take                      C. took                         D. taking

28、The greater population is living in a city,______ for water, transportation, and disposal of rubbish.

A. there is need the greater                                B. the greater need there is

C. the greater need is there                                D. there is the greater need

27、--- What did you think of yesterday's film?

--- Well, I ______ when the film was only half way through.

A. was leaving              B. left                           C. have left                   D. was left

26、Around the shopping center         a lot of buildings,         many residents live.

       A．are; in which                                       B．has; next to which  

       C．is; where                                            D．have; that

25、In the dark street, there wasn’t a single person         she could turn to for help,     made her frightened.

       A．that; that             B．x; which              C．whom; who         D．which; which

24、I don’t doubt         they can finish the task ahead of time.

       A．whether              B．if                        C．that                     D．why

23、―Could you tell me why he was arrested?

―He happened to         on the train for Shanghai.

       A．be stepping          B．be seen picking    C．be caught to pull  D．catch damaging

22、It was         we were having dinner at the table         there was a knock at the door.

       A．where; while        B．which; as            C．when; after          D．when; that

21、It is         that his drawing is         perfect.

       A．sure; very            B．certain; quite        C．exact; fairly         D．right; rather