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

stay-

wait-

break-

forgive-

go-

have-

can-

invent-

fly-

work-

show -

stop-

help-

make-

catch -

live-

sue-

save-

listen-

like-

cry-

see-

compare-

prefer-

attack-

wonder-

understand-

prefer-

hope-

invite -

bring-

die-

read-

cut-

send-

shout-

discuss-

protect-

ask-

need-

freeze-

think-

be-

talk-

suppose-

fire-

pay-

appreciate-

exist -

track-

lear-

destroy-