17.This pair of shoes is smaller (B) than that one.
18 The Nile River is the longest (A) river in the world.
13. Minh is much taller (B) than his brother.
14. Ba is more generous (B) than Huy.
15 Yuly is the hottest (B) month in a year.
19. Tuan is more intelligent(B) than Ha.
20. He is studying (C) hard at the 1 điểm moment
Học tốt nha!!!