However, much more needs to be done, and even greater improvements in global health are possible.

Since 1979, there have been great improvements in the health of the nation.

"I am sure that Guy will find a great improvement when he comes to see you."

This is a great improvement, especially if you don't have any or the correct change.

This would be a great improvement from the current 6 hours.

It was a great improvement over the way they usually did business, something to remember for the future.

That would be a great improvement over the last five years.

This is a great improvement and we should remember that.

"Not nearly enough, but still a great improvement has taken place."

Even so, it was a great improvement on a few hours ago.