题目内容：

求下列动词的过去式和ing形式．
wait.borrow.keep.work.die.wait.pick.try.return.take

优质解答

wait.waited,waitingborrow.bought,borrowingkeep.kept,keepingwork.worked ,workingdie.died,dyingwait.waited ,waitingpick.picked,pickingtry.tried,tryingreturn.returned ,returningtake took,taking