1) to order - ordered, to clean - cleaned, to ask - asked, to answer - answered, to decide - decided, to discuss - discussed, to miss - missed; 2) to stand - stood, to take - took, to read - read, to write - wrote, to see - saw, to go - went, to put - put, to leave - left, to do - did, to have - had, to find - found, to know - knew, to teach - taught, to lose - lost, to get - got, to come - came, to think - thought, to speak - spoke.