21．I can’t believe that the housing prices should be ten times height of those in 1990s.
A. a; the B.the; a C. the; 不填 D .the; the
22.You may depend on that they will look after your daughter when you are away for the meeting.
A. it B. this C. her D.them
23.John was dismissed last week because of his attitude towards his job.
A.casual B. informed C. determined D.admirable
