watch wash clean play visit cok return learn climb miss stay match study fly see sing
问题描述：
watch wash clean play visit cok return learn climb miss stay match study fly see sing
do go swim buy take leave get have
写出他们的过去式
答
watched
washed
cleaned
visited
cooked
returned
learned 或者 learnt
climbed
missed
stayed
matched
studied
flew
saw
sang
did
went
swam
bought
took
left
got
had
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