A
B
C
100

To fill (something) with air or gas

Add up

100

to continue

go on

100

end a relationship

break up

200

To continue to do what you have been doing

carry on 

200

To take care of

Look after

200

discover by accident

come across 

300

To break into parts in usually a sudden and unexpected way,

fall apart

300

To search for (something) in a reference book, on the Internet, etc.

look up

300

visit someone at their house

come over

400

To avoid being caught : to escape

get away 

400

To be aware of something dangerous.

watch out

400

postpone

put  off

500

To stop an activity or effort : to admit that you cannot do something and stop trying

give up

500

explode

blow up

500

enter a house unlawfully

break into