В правильную форму You can improve your English by (do) a lot of reading. Tom left without (finish) his diner. She run 5miles without (stop). They got into the house by (break) a kitchen window and climbing in. It is nice to go on holiday without (have) to worry about money.

You can improve your English by doing a lot of reading
Tom left without finishing his dinner
She run 5 miles without stopping
They got into the house by breaking a kitchen window and climbing in
It is nice to go on holiday without having to worry about money