短文改错: 61....sing songs to ...sing → sang 62....depths of boring.boring → boredom 63....someone agreed ...someone → everyone 64....reach at our ...去掉at或reach → arrive 65....it seemed possible.possible → impossible 66....at the hotel.the → a 67....went out quiet ...quiet → quietly 68....trying to wake ...to前加not 69....so I forgot to ...so → because 70....go to the ...go → going