chọn câu có cùng nghĩa với câu đầu tiên 1,you should clean this classroom every day A, this classroom should clean every day B,this classroom should been cleaned every day C,this classroom should be cleaned every day D,this classroom should be clean every day 2, she started learning English three months ago A,she has learned english for three months B,she was learning English for three months C,she is learning English for three months now D,she has learned english for three years ago 3, mai is taller than her sister A,mai is as tall as her sister B,mai's sister is shorter than her C,mai is tallest in her family D,mai's sister is tall than her