Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.
Câu 21: Host: “I’m terribly sorry for this inconvenience.” Guests: -"_______"
A. It’s mine. I came late B. It’s not your fault
C. I’ll do better next time D. Fine, thanks
Gợi ý câu trả lời: