The objective was for sources to find the most cost-effective means for limiting SO2 emissions and to be responsible for achieving those emission reductions.
They are trying to find the most cost-effective way to limit SO2 emissions.
They are trying to find the most cost-effective way to increase SO2 emissions.
Some campers are in their tents.
he is being silly
I don't remember when I was last there.
The boy is sitting down.
There is no public access to the upper stories of the Petronas Twin Towers.
The woman is running a magazine stand.