I work in London.
I am working now.
She worked yesterday.
She will work tomorrow.
She was working when I called.
She has worked here for five years.
You should study more.
She is going to work late.
She is going to work late.
She has been working all day.
She had worked before I arrived.
She will be working at 5 PM.
She had been working for two hours before he arrived.
She will have worked here for 10 years by next month.
She will have been working for 6 hours by lunchtime.