In old days, books for blind people used paper ____ against metal wire to form letters.
He tried to escape __________ because he broke the school rule, but failed.
__________ the guidance of his director, he finishedhis report ahead of time.
—When did he begin to __________ painting? —At the age of 12.
The design has to __________to all ages and socialgroups.
It is __________ that he knew nothing __________ it.