Choose the right answer.

1) I usually new words in a dictionary.
make
look up
do
2) I along the street when I met David.
was walking
am walking
walked
3) The radio was on but nobody .
listened
was listening
wasn't listening
4)She her arm while she was skiing.
broke
was breaking
did break
5) Try to avoid a lot of noise because your brother is sleeping.
having
doing
making