1, b – enjoyable
2, c – collector
3, b – collection
4, b – interesting
5, b – heroine
6, c – beautifully
7, b – mountainous
8, a – invite
9, a – relax (đáp án này mình nghĩ bị viết sai, phải là relax thay vì relaxe nhé)
10, b – information
11, a – advertise
12, c – editor
13, b - cultural
14, d – polluted
15, b – carefully
16, b – kindly
17, c – beautiful
18, b – pollution
19, b - seriously
