A-I-1.A;2.B;3.D
II-1.D;2.C
B-I-1.A;2.D;3.D;4.C;5.D;6.C;7.A;8.C;9.A;10.B
II-1.WERE/WOULD GO
2.VISITED/WERE HAVING
3.WROTE/DIDN'T RECEIVE
4.STAY
5.TEACHING/TO DO
6.IS BEING BUILT
III-1.CAREFULLY
2.POLLUTION
3.CELEBRATION
4.INFORMATIVE
5.TRADITIONAL
CHÚC BN HỌC TỐT NHA ^^