dạng bị động 1: Elias Howe invented the sewing machine in 1845 2:The librarian did^t allow Tom to take those books home 3:The teachers won^t teach knowledge on recy cling tomorrow 4:Hoi An attracts a lot of tourists 5:Did all students attend fist -aid course last year 6:Farmer can milk cows twice a day 7:The nurse taught Hoa how to give Fist-aid on the phone 8:When I came ,he was repairing the computer 9:We will grow a lot of trees in the parks