Mark the letter A, B, C, or D on your answer sheet to indicate the cor

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.    

I think you ………. have told your parents you were going to be late. They were very worried.

• A. A. could
• B. B. must
• C. C. might
• D. D. should

Dịch nghĩa: Tôi nghĩ bạn lẽ ra nên nói với bố mẹ rằng bạn sẽ về muộn. Họ đã rất lo lắng.
shoul have P2: lẽ ra nên làm gì nhưng đã không làm