We drink milk every day
We drank milk yesterday
We'll drink milk tomorrow
We have already drunk the milk
We had drunk the milk just before our mother came in
We'll have drunk the milk just before our mother comes in
We have been drunking milk since this film began
We still had been drunking milk when our mother came in
We are drunking milk now
We were drunking milk while our mother cooked supper for us
We'll be drunking milk at the time you sleep