Review progress regularly and challenge existing best practice to reduce waste even more.

Teachers are regularly challenged in front of children - how are they to have any respect if parents aren't good role models?

Never one to be over-awed by others, Williams regularly challenged his professors as well.

It also regularly challenges the authorities to ensure they do not forget the plight of male victims.

It was an exercise familiar to Johnson two years ago, when he hit 36 home runs and was challenged regularly.

The 1848 English cricket season saw an increase in northern matches with the main town clubs regularly challenging each other.

The Aberdeen side of the 1970s regularly challenged for domestic honours.

Renaissance thinkers regularly challenged conventional wisdom from the Medieval period and earlier.

While abortion remains legal in most of the West, this legality is regularly challenged by anti-abortion groups.

He regularly challenged the government through his column.