Mark the letter A, B, C or D on your answer sheet to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of thefollowing questions from 13 to 17.

a. Nam: Hi, Mark! Long time no see. You look so good!
b. Nam: Yes, I have. I exercise every morning and eat more healthy food.
c. Mark: Hi, Nam! Thanks. You look so fit, too. Have you worked out a lot lately?