We worked for two days on all the ways to play them.

He worked for two days on the play, earning £250 per day.

All the students worked for so many days to get it right.

They typically work for 2-3 days per week in each setting.

He had probably been working for more than two days on the stone.

We had worked together for 5 days in order to come up with all the necessary data.

The school works for approximately 220 days in a year.

I'll work hard for four days in between, go out the next time, and be aggressive.

It had been working for four days, the panel said.

He worked 10 hours a day for six days a week.