bài 1: 1.A 2.C 3.C 4.B 5.A 6.B 7.D 8.A
bài 2: 1.unhealth 2.disapears 3.pleasure 4.nationality 5.desicion 6.surrounding 7.unnecessary 8.traditonal
bài 3: 1.interested->interesting 2.him->his 3.gone->went 4.among->between 5.had->was 6.bought->buy 7.wetter->wetest 8.since->for 9.did->done 10.any-some
bài 4: 1.learning 2.are
chúc hok tốt, cho mk ctlhn nhé, mk cảm ơn