17. A (so sánh hơn)
18. A
19. C
20. A
21. C
22. A
So sánh hơn
-Tính từ ngắn:(S1+V+adj(er)/adv(er)+than+S2+V)
-Tính từ dài:(S1+More+adj /adv+than+V)
II.
23. B (Adj(er)+than)
24. A
25. C
III.
1. Her new house is smaller than her old one
2. The white dress is cheaper than the black one
3. Math is more difficult than English