Maybe it has to do with the mystery of space travel.

VOA: special.2010.06.27

"The stirring of this intense debate has to do with what does it mean to be a successful parent and what does it mean to be a successful child?"

VOA: special.2011.02.17

But,a man always has to do his best.

VOA: special.2009.02.21

"It has to do to a large extent with the stimulus measures taken by governments, and by the very vigorous response of central banks on the crisis.

VOA: standard.2010.04.21

"When they don't fund education, the district does what is has to do."

VOA: standard.2010.08.11

"Vice President Lyndon Johnson has left the hospital in Dallas, but we do not know to where he has proceeded.

VOA: special.2009.08.16

But there is an expression to get cold feet that has nothing to do with cold or your feet.

VOA: special.2009.12.13

He just smiled and said, "A man ain't nothing but a man.He has just got to do his best."

VOA: special.2009.02.21

Huck's heart leads him to do the right thing, even when everything he has been taught tells him it is wrong.

VOA: special.2010.03.21

Now,Timir Baman has asked the United States Food and Drug Administration for approval to do a larger test.

VOA: special.2010.06.02

Francis Collins, the director of the National Institutes of Health in Bethesda,Maryland, has attempted to do that.

VOA: special.2009.12.01

He says the World Bank has found that simpler rules and other regulatory reforms make it easier to do business in the Middle East.

VOA: special.2010.05.10

I knew some of it, but it has been interesting to do the background on it."

VOA: special.2010.06.28

But experts say it is still too high and Pittsburgh has more work to do.

VOA: special.2009.07.13