F: I can't believe that you failed your test. You studied for it all night long. How come you haven't gotten an A? ,M: When I got to the test, I was too exhausted. I couldn't keep my eyes open.
(A) F: You need to work hard. You played games all night long yesterday. (B) F: I’m sorry, I don’t understand. Could you say it again? (C) F: You didn't sleep well because you played games all night. (D) F: You didn't sleep well.
D