Match the phrasal verbs to their definitions connected with the meanings in the texts.
1.catch up with
2.fall behind
3.get on with
4.look up
5. Go on
6.take up
a.to have a good relationship
b.to begin to do something as a pastime
c.to work hard to do uncompleted work
d.to search for a piece of information
e.to fail to keep level with another
f.to continue