1)koalas climb/ are climbing trees.
2)why do you run/are you running?
3)mary never is waking/ wakes up late.
4)sue and bob have/ are having a guitar lesson every saturday.
5)look! she is dancing/dances!

1)koalas climb trees.2)why are you running?3)mary never wakes up late.4)sue and bob have a guitar lesson every saturday.5)look! she is dancing!