A girl wearing a harness is lifted out of the water.
A girl has been swimming.
A little girl has been building a snowman.
a man throws a frisbee to another man
A surfer rides a wave.
There is a test coming up.
Mercury, NOx, and SO2 are best considered in harm reduction by themselves, since they bear no relation to each other.
Civility is the most important major virtue of them all.
Economic research suggests investment in IT is good.