上星期一（last monday）
    last monday my father and i visited a friend. but friend was not at home, and we found a note on the door. it said:"please wait for me a little while." we felt very surpised! suddenly the door was opening and the light bright in doors. we walked in his home. and we found a note again, it said:"happy birthday."
    "oh, i see." today was my father's birthday.