总结别人的合成的答案：
现在时-过去式
begin to do-began to do blow away-blew away
break down-broke down bring to-brought to
buy sth.for sb.-bought sth.for sb.come up-came up
catch up-caught up choose from-chose from
dig up-dug up do well in-did well in
draw up-drew up drink to-drank to
drive to-drove to eat up-ate up
fall down-fell down feel down-felt down
fly through-flew through forget doing-forgot doing
freeze over-froze over get through-got through
give away-gave away go back-went back
grow up-grew up hear from-heard from
hold on-held on keep up-kept up
know of-knew of learn from-learnt from
leave for-left for lend to-lent to
lose one's way-lost one's way mean doing-meant doing
make up-made up ride a bike-rode a bike
run after-ran after sell out-sold out
send for-sent for show up-showed up
sit down-sat down stand out-stood out
sweep away-swept away take care-took care
tell truth-told truth think of-thought of
throw away-through away wake up-woke up
win over-wan over
hang out-hang out
grow up-grew up
get back-got back
come back-came back
fly kite-flew kite
play computer games-played computer games
go camping-went camping
go shopping-went shopping
run fast-ran fast
break down-broke down
bring down-brought down
buy out-bought out
come about-came about
cut off-cut off
catch on -caught on
draw on-drew on
eat up-ate up
fall back-fell back
hide out-hid out
keep to-kept to
lay in-laid in
make up-made up
put by-put by
read up-read up
see to-saw to
think of-thought of
wear out-wore out
