The hard work of this grassroots effort resulted in the first Earth Day on April twenty-second, nineteen seventy.

VOA: special.2010.04.21

Like many American cities, Pittsburgh was built on the hard work of immigrants.

VOA: special.2009.07.13

William Thornton is hard at work on a set of building drawings.

VOA: special.2010.01.27

(OMITTED) Students work as hard in class as they do on the basketball court, and Taylor says they are succeeding.

VOA: standard.2010.06.24

"You know winning a gold medal on the field of play is one thing that speaks to your hard work and your dedication to being an elite athlete.

VOA: standard.2010.02.27

And they are extremely proud of what they're doing. But all of us volunteers,workforce, everybody involved has to keep their eye on the ball, work hard right to the end.

VOA: standard.2010.02.21

So if we can get better at giving people triggers of when to leave early, which we will work very hard on doing, then people evacuating themselves is the safest thing to do as long as it's early enough."

VOA: standard.2009.06.24