b a a b c d
announcement
completely
interactive
conversationists
humorous
31. Tet is so important a celebration that family members living apart try to come back home.
32. Both developed and developing nations are responsible for polluting the rivers and seas.
19 B
20 A
24 A
22 B
23 C
24 C
VI
1 announcement
2 completely
3 interactive
4 conservationists
5 advanced
6 humorous
31 a celebration that family members living apart try to come back home
32 and developing nations are responsible for polluting the rivers and seas








