Please ring me up before nine o'clock,(改成一般疑问句)

Please ring me up before nine o'clock,(改成一般疑问句) we must get everything ready before five o'clock.(改成一般疑问句） back before nine o’clock. We get up at six o' clock.改成一般疑问句和对划线部分提问（划线部分six o' clock school stats at nine o'clock改为一般疑问句 It 's nine o 'clock in Beijig.变成一般疑问句? School starts at nine o'clock变一般疑问句 School starts at nine o'clock.（改为一般疑问句） Lunch is usually at tweleve o'clock.改成一般疑问句, then start at 9 o'clock（改成一般疑问句） Lessons start at nine o' clock 改为一般疑问句和否定句 we start lessons at nine o'clock（改为一般疑问句）