Question 9: If people paid more attention to the environment, the Earth_________ greener.

A. would be                B. will be                    C. would have been    D. had been

Question 10: My aunt has lived in this town since she ______ to work as an engineer.

      A. begin                            B. had begun                     C. have begun                   D. began

Đề phát triển từ đề minh họa 2021 - Tiếng Anh - GV Cô Hiền - Đề 4 - có lời giải