Would you believe that the firstoutstanding deaf teacher in America was Laurent Clerc，a Frenchman At 12，he 16 the Royal Institutionfor the Deaf in Pads where he became a top student.After 17 ，the school asked him to stay on as a 18. Meanwhile.an American named Thomas Gallaudet wasstudying to be a minister(牧师)19 he met a young girl whowas deaf.He was disappointed to learn that there weren0 20 for the deaf in America.21 ,in 1815 Gallaudet sailedto London to 22 information on deaf education.However.he was 23 to get help and becamefrustrated(灰心的).Fortunately he meta French educator who 24 him to go to Pads to spend three months 25 atthe school where Clerc was working.The school askedClerc to teach 26 sign language.As aresult，the two men 27 each other. When the time came for Gallaudet t0 28 America，he asked Clerc to come with him.The twomen 29 in June l816.The voyage 30 the Atlantic(大西洋)tookdays.They put the time to productive use， 31 for the new school for the deaf 32 they wanted to open.Such a school was 33 thefollowing year in Connecticut. At the school，Clerc led a busy life.Although he wanted to return to France，he 34 did.He died onJuly l8，1869，still in America.France’s 35 was America’s gain !

A．often
B．sometimes
C．seldom
D．never