1)
1.C 2.C 3.A 4.B
2)
1.C 2.B 3.B 4.C 5.D 6.A 7.B 8.C 9.D 10.C 11.A 12.B
3)
1.B 2.C 3.B 4.D
4)
1.are working
2.did you do
3.to keep
4.was seen
5)
1.beautiful
2.daily
3.selflessness
4.modernized
6)
1.A 2.B 3.D 4.B
7)
1.It's smoking.
2.Smoking causes about one million early deaths every year.
3.Their parents who don't smoke.
4. Yes ,they do.
8)
1.Nam wishes he had an e-bike.
2.Your house should be decorated to welcome the New Year.
3.Rosy thanked Nga for her help.
4. I have bought my children a pizza since four months ago.
