1.   And even before its testing is finished, the commission has asked Underwriters Laboratories to toughen its standards.

2.   A slower pace of borrowing could reflect efforts by banks to toughen lending standards.

3.   Davis made education his top priority during the campaign, and promised to call a special session of the Legislature to toughen standards for students.

4.   Environmentalists say more could have been done to toughen standards for plant emissions.

5.   Last month, the Senate rejected a plan to toughen fuel-efficiency standards.

6.   Many big cities routinely violate clean air standards for smog, and the EPA last year toughened the standards nationwide and called on states to clamp down on emissions.

7.   New guidelines are being drafted for petitions requesting protection for individual species, toughening the standard of scientific evidence in support of these proposals.

8.   New rules toughening standards for the compounds that form smog and soot are set to be phased in over the next several years.

9.   Silber and his counterpart at the Board of Higher Education, James Carlin, say they plan to work together to toughen standards for teacher training.

10.   The Clinton administration made official its new rules toughening standards for smog and soot, drawing immediate criticism from business groups and lawmakers who vowed to fight them.