It is pretty well understood ________ controls the flow of carbon dioxide in and out the atmosphere today.
The most important _____ of his speech was that we should all work whole-heartedly for the people.
. These plastic flowers look so _____ that many people think they are real.
When I took his temperature, it was two degrees above _____.
His landlady gave him a week's _____ to leave the flat.
. If he refuses to _____ my plan, I can probably find someone more cooperative.