29.-- Why was a special meeting called?

-- ＿＿＿a new chairman.

A.To elect　 B.Electing　 C.Our electing　 D.Elected

28.Mike didn’t start＿＿＿＿the importance of a foreign language till he graduated from school.

A.knowing　　　　　　　　 B.to know

C.know　　　　　　　　　　 D.to have known

27.＿＿to sunlight for too much time will do harm to one’s skin.

A.Exposed　 　　　　　　　B.Having exposed

C.Being exposed　　　　　 D.After being exposed

26.I worked so late in the office last night that I hardly had time＿＿＿ the last bus.

A.catching　　　　　　　　 B.to catch

C.having caught　　　　　 D.to have caught

25.The students are forbidden, unless they have special passes, ＿＿＿ after 11 pm.

A.to stay out　　　　　　 B.from staying out

C.staying out　　　　　　 D.not to stay out

24.As I will be away for at least a year, I’d appreciate＿＿＿from you now and then＿＿me how everyone is getting along.

A.hearing； tell　　　　　 B.to hear； tell

C.hearing； telling　　　 D.to hear； to tell

23.And there, almost＿＿＿in the big chair, sat her little brother, who never had to be told to keep quiet.

A.having lost　　 B.losing　　 C.to be lost　　 D.lost

22.It was＿＿＿＿computer games that cost the boy a lot of time that he ought to have spent on his lessons.

A.to have played　　　　 B.playing

C.played　　　　　　　　 D.having played

21.With his son＿＿＿, the old man felt unhappy.

A.to be disappointed　　 B.disappointing

C.being disappointed　　 D.to disappoint

20.Nearly every great building in Beijing was built＿　 south.

A.to face　　　　　　　　 B.facing

C.to have faced　　　　　 D.being facing