He made another wonderful discovery, ______ of great importance to science.
He is always telling the director how to run the business, _________ is like teaching one's grandmother how to suck eggs.
I can’t remember how the tune goes, ______ I’ll recognize it when I hear it.
______ about “the God Particle” that Jude decided to search for as much information as possible about it.
Audiences were greatly ______ by the video class about weightless conditions _____ in Tianggon-1 space station.
---I heard that Bill was scolded by the teacher last week. ---Ah, yes. The teacher wanted to check his exercises, but ___ was finished at all.