Question 17. It can be difficult to teach young children because of their short attention_____________.

A. limit                                 B. span                              C. duration                        D. time

Question 18. He objected to_____________.

A. his mistakes being laughed at                                   B. laughing his mistakes at

C. his mistakes laughing at                                            D. his mistakes at laughing

3. Đề thi thử THPT 2021 - Tiếng Anh - Nhóm GV MGB - Đề 3 - có lời giải