You/ have to/ look after/ baby/careful.12/19You/ have to/ look after/ baby/careful.You have to look after the baby careful.You have to look after the baby carefully.You have to looking after the baby carefully.You has to look after the baby carefully.Giải thíchĐáp án đúng: B Tạm dịch: Bạn phải chăm sóc em bé cẩn thận.