cai nay thi con phu thuoc vao ban,tasd de nhat ban lam cung chi mat den 1-2p,co cai 3p,khi moi lam thi lau lau,wen rui thi nhanh,moi 1 tasd la 1 nhiem vu khac nhau ban nhe,ban thich lam vao thoi gian nao cung duoc khong phu thuoc,tasd ra luc nao lam luc do,khong ai bat buoc ban phai ngoi xuot ma...