S: She
O: the new timetable
V: was heard complaining
Active: Someone heard her complaining about the new timetable
Someone heard her complaining about the new timetable.
S : someone
V : hear
O : her complaining about the new timetable
Someone heard her complaining about the new timetable.
S: someone
V: hear
O: her complaining about the new timetable
Someone heard her complaining about the new timetable.
S : someone
V : hear
O : her complaining about the new timetable