1,He is too young to go to school alone ->he is not 2,This boy broke my windows yesterday ->my 3,The flight to Lon Don lasted fourteen hours ->It took 4,"Where are you going,Lan?"said Hoa ->Hoa asked Lan 5,Unless he hurries,he will miss the show ->If 6,They made jean cloth completely from cotton in the 18th century  ->Jean cloth  7,We have to improve all the school in the city ->all the schools  8,"what is the name of your school?" ->Marry asked me 9,"Can you use a computer for emailing ang chatting  ->the teacher asked Nam 10,In spite of being tired, Mrs.Thoa helped Tuan with his homework  ->Although Mrs.Thoa 11,The boy started to cry.You broke his toys ->The boy 12,This is a girl.You see her at the bookstore near your workplace  ->This is the girl