Mark the letter A, B, C, or D on your answer sheet to indicate the correct arrangement of the sentence to make a meaningful paragraph/letter in each of the following questions.

a. Lan: It's Mai's birthday, Mum. Is it OK if I stay the night at her house after the party?
b. Lan's mother: Certainly. Whose birthday is it?
c. Lan: Mum, Can I go to my friend's birthday party this Saturday evening?
d. Lan's mother: Oh, I'm afraid not. You must come back home before 10 p.m. We're going to visit your grandparents early on Sunday morning.
e. Lan: OK, Mum. I’ll be home before 10 p.m. then.