--I came ___ two idioms which puzzled me on the cover of an old book which I was looking for a new material in yesterday.---Why not go to the teacher for ___ about them?
--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.