5、hadleft( )22.The book ________ to be one of the greatest books in the world. A.think B.thinks C.thought D.is thought( )23. __________ I know, he has gone to Shanghai. A.As B.As far as C.So far D.So far as ( )24.The teacher often encourages the students ________ hard. A. to work B. work
6、C. working D. to working( )25.Some flowers _______ in our school next month. A. will plant B. have planted C. was planted D. will be planted( )26.The TV ________ off already. The music is from the radio. A. has turned B. turned C. has been turned D. was turned ( )27. Air must _______ fr
7、esh all the time . A. keep B. is keptC. be kept D. been kept ( )28.They_______hereformorethanamonth.A.havearrivedB.havereachedC.havecomeD.havebeen( )29.Confuciuswasagreat_andthinker.Histhoughtsstillinfluenceu