1,C 2,C 3,D 4,C 5,B
6,D 7,A 8,A 9,D 10,C
11,D 12,A 13,C 14,B 15,C
16,I couldn't sleep because there was a loud noise next to mu door last night.
17,they haven't replied our invitation so far so I think they are not coming.
18,If you don't offer me more money,I won't stay.
19,If the soil didn't badly polluted,trees and grasses could grow here.
20,the environment is polluted makes birds leave their habital and plants die.
cho mk 5* cảm ơn và CTLHN nếu bạn thấy hữu ích
