I. Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.Câu hỏi X: "I feel nervous. I've got an exam today." - Y: “ _____ ” A. Cheer up! Things can't be that bad! B. That's great. Have a good time. C. Poor you! That happens to me sometimes. D. Good luck! Do your best.