tìm và sửa lỗi sai : 1 . I go to school at 6:40 o'clock                                2. My school finish at 11:30                                3. What do your sister do ? - She's a pupil                                 4 . My father waterthe flowers yesterday morning                                 5 . He goes on bed at 9:45                                6. My mother gets up early on the  morning                                7.Mr.Tuan is a doctor . He works in the field                                8.Her grandfather plants rice ,vegetable and raises pig,chicken. He is a factory worker.                                 9.Mr.Lien teaches English at my school . She is a pupil                                10.There is four people in my family : my father , my mother , my brother and me