I.
14. She is the tallest in my class.
15. Mai is happier than her sister.
II.
14. My (A) parents (B) give (C) I(D) the lucky money. (sửa lại: me)
15. We (A) shouldn't (B) says (C) bad words(D). (sửa lại: say)
16. The students do (A) some experiments (B) at (C) the moment (D). (sửa lại: doing)
17. What (A) do you usually (B) do at (C) your free (D) time? (sửa lại: often)
18. You should (A) practise speak (B) English before (C)you go (D)to England. (sửa lại: speaking)
19. His brother (A) is more (B) patient boy(C) than him( D). (sửa lại: patienter)
20. My (A) house is most (B) expensive (C) house in ( D) the city. (sửa lại: the most)
(Theo ý kiến riêng của mik)