写出下列单词的三单、过去式、过去分词及现在分词

borrows  borrowed  borrowed  borrowing
chats    chatted  chatted    chatting
dies     died   died    dying
has   had had  having
hears   heard  heard  hearing
marries   married  married   marrying
pushes  pushed pushed   pushing
pays   paid  paid paying
opens  opened  opened  opening
refers  referred  referred  referring
reads read read  reading
sings   sang sung   singing
studies   studied studied  studying
writes   wrote  written    writing
 


1.looked  over
2.look after 
3.look up
4.look out
5                looked around    .looked  for