They may understand the politics of school choice or welfare reform, but tend to be far shakier on the substance.
They have some understanding of school choice or welfare reform.
They have a firm understanding of school choice and welfare reform.
The house contains a small orchard which is popular with tourists.
The king allowed democracy full reign, which dismayed Franco diehards.
Only young children can learn to windsurf.
A bunch of young people are hanging around a white building.
People are shaping material.
The EPA cited those sections.