Write the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 18 to 19.

What does the notice say?

Đáp án chính xác: You have to give books back to the desk before 5 p.m.

Học sinh quan sát hình ảnh/ngữ cảnh và chọn đáp án đúng: You have to give books back to the desk before 5 p.m..