Plans have been proposed ______ the largest dam in the world to be built along the Congo river.
Though he failed, he tried _______ it again and again.
You didn't hear us come back last night. That's good. We tried ______ noisy.
Remember ______ the book, when you have finished it.
Some people's greatest pleasure is ______ .
. It's very kind ______ you ______ say so.