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 the following questions from 13 to 17.

a. David: Hey, Sarah! You've been traveling a lot lately, right? b. David: That's amazing! How was the experience? c. Sarah: Hi, David! Yes, I just got back from Europe.

Đáp án đúng là: C