1/Đặt giới từ vào chỗ trống:Many lives were saved........the introduction of antibiotics 2/Viết câu ko đổi nghĩa với câu cho trước WE have tested the new system several times before ->The new system..................................................... ''You had better keep your room tidy, Tim'', said Omega ->Omega................................... No one plays this piece of music as beautifully as he does ->He plays......................................................... It's not worth asking the manager for a day off ->There is ........................................................ 3/ a)The manager should think about experience when hiring new straff(CONSIDERATION) ->The manager should......................................when hiring new staff. b)Do you think you could give me a hand to move the sofa?MIND ->Would you..............................to move the sofa? c)Brian was really interested in North American history in his school days.INTEREST ->Brian......................................North American history in his school days. d)When it comes to population, Beịing's is much bigger than Auckland's.POPULATED ->Beịing is.........................................than Auckland