The National Association for Sport and Physical Education says twenty to thirty students in a P.E.class should be the limit.

VOA: special.2009.08.06

For the best results, carrots should be grown in sandy soil that does not hold water for a long time.

VOA: special.2009.02.24

"The conduct represented in the recently published article does not meet the standard that should be set by a commanding general.

VOA: special.2010.06.26

She says the new standards clearly state what a student should be able to do to be successful in college and work.

VOA: special.2010.03.25

There was some question whether Brown should be tried in a federal court or a state court.

VOA: special.2009.07.02

Most of these companies say their work should only be used as models and should not be turned in as a finished work.

VOA: special.2009.04.23

They should also be warned that cigarette smoking works with the alcohol in a way that further increases the risk of esophageal cancer.

VOA: special.2009.06.23

A challenge that affects parents, children and citizens in almost every community in America should not be a Democratic problem or a Republican problem.

VOA: special.2010.08.12

He said he has ordered a report in thirty days on what,if any, additional safety measures and technologies should be required to prevent future spills.

VOA: special.2010.05.01

He believed music should be simple and clear, yet played in a meaningful way.

VOA: special.2009.03.01

You can find other advice online. For example, we learned that sod should not be placed so that the ends of the pieces are all in a line.

VOA: special.2009.07.07

In a statement,he said "all violent crimes should be prosecuted vigorously."

VOA: special.2009.10.31

The leaves should be dry in a week or two.

VOA: special.2009.06.02

(Speaking in Russian) Marituu says there should be a clear line between the study of history and politics.

VOA: standard.2009.12.25