Plans have been proposed ______ the largest dam in the world to be built along the Congo river.
---Will you two go to the show tomorrow?---No. We're going to a lecture, or at least I'm planning ____.
I'd love ___ to your party last Sunday if not because of the unexpected guests.
____ the temperature falling so rapidly, we couldn't go on with the experience.
--- Do you know Uncle Tom is crazy about gardening?---Sure. He ____ his flowers in the garden now.
He is neither______ European, nor______ American. He is from______ Australia.