But finer materials such as compost should only be two and a half to seven and a half centimeters high.

VOA: special.2009.06.23

But small pieces should not be placed along the edges of an area as they can dry out more quickly.

VOA: special.2009.07.07

The fall guy may have been involved in the situation, but was not the person who should be blamed.

VOA: special.2010.02.21

But the experts say you should still use traditional CPR with a combination of breaths and compressions on babies and children.

VOA: special.2009.06.09

But the question remained: should slavery be legal in new territories in the western part of the country?

VOA: special.2009.04.02

But,in his words, "A smart entrepreneur should spend his time developing the business rather than the business plan."

VOA: special.2009.06.26

But sixty-six percent agreed that a professor should consider effort and not just the quality of a student's work when deciding grades.

VOA: special.2009.03.12

But now the heart association says everyone should use hands-only CPR unless they feel strong about their ability to do rescue breathing.

VOA: special.2009.06.09

"Why should we do something when we've already done it?" But he recognizes that some people have strong feelings about the issue.

VOA: special.2010.04.28

But activists say men and women should have equal chances for economic,social and intellectual satisfaction in life.

VOA: special.2009.10.18

But some environmental groups say it should be made permanent to end the nation's dependence on oil.

VOA: special.2010.06.19

"He thought that testing had its place, but that testing should be more like medical tests.

VOA: special.2010.01.07

But they say smokers should stop anyway and the real message is not to even start.

VOA: special.2010.01.13

But experts say this should not stop gardeners from growing food if they take safety measures.

VOA: special.2009.06.09