Write the past simple forms of the following verbs, make two lists, one for regular verbs and the other one for the irregular ones.

REGULAR: stay, wait, break, forgive, invent, work, stop, help, make, catch, live, save, listen, like, cry, compare, hope, die, cut, send, protect, ask, think, talk, supposed, pay, stay, appreciate, exist, track, destroy.

IRREGULAR: go, can, fly, show, help, see, prefer, attack, wonder, understand, invite, bring, read, shout, discuss, need, freeze, be, leard.