1.haven't you done 2.hasn't writen/hasn't finished. 3 .has taught/graduated 4.left/haven't met 5.have cooked. 6.hasn't lived/finished. 7.has been. 8 have already gone. 9.have waited/hasn't come yet. 10.has writen. 11.have you learnt 12.has already finished. 13.have read 14.hasn't ever been. 15.has studied 16.have you seen. 17.have been. 18.have forgotten. 19.have waited 20.have you ever seen. 21.has learnt. 22.has taught. 23.has been studied. 24.was doing. 25.met 26.did she visit. 27.visited. 28.bought 29.was given. Đây nhé bạn. Giải thích: -already:vừa mới. -S+has/have+Vp2+for/since+V quá khứ