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.

Đáp án đúng là: D