Viết lại các câu sau sao cho nghĩa không thay đổi : 1 : Nam is thinner than Minh . -> Minh is .................................... 2 : My father is heavier than me  . -> I am ................................... 3 : The city is more polluted than that city . -> That city .......................... 4 : My shirt is old than your shirt . -> You shirt is ...................................