Cho dạng quá khứ của các động từ sau:
example: to help- helped
To visit .............
To arrive...........
To remember.....................
To return.......................
To rent ....................
To receive.................
To talk..................
To stop...................
To look.....................
To move.................
To watch...............
To learn................
To have- had
To be..................
to go......................
To buy......................
to take.......................
To see.........................
To think.........................
To wear.........................
To put..........................
To eat.......................
To give.......................
To teach......................
To make........................