You should remember these verbs too!

base form	past	past participle
be	was, were	been
become	became	become
begin	began	begun
bring	brought	brought
buy	bought	bought
come	came	come
cost	cost	cost
cut	cut	cut
do	did	done
drink	drank	drunk
eat	ate	eaten
forget	forgot	forgotten
get	got	gotten
give	gave	given
go	went	gone
have	had	had
hurt	hurt	hurt
know	knew	known
make	made	made
meet	met	met
pay	paid	paid
put	put	put
read	read	read
sing	sang	sung
sit	sat	sat
sleep	slept	slept
think	thought	thought
understand	understood	understood
write	wrote	written