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. Mark: Working night shifts must be really hard. When does he sleep?
b. Lan: That's right. My dad is a factory worker, so he works in shifts. Today he's on the night shift.
c. Lan: Come in, Mark. Did you find my place easily?
d. Mark: Yes, I actually met your dad in the street and he showed me the way. He said he was on his way to work.
e. Lan: He goes to bed right after he comes home in the morning when there's no one at home. My mum's usually at work then. She teaches at a primary school.