After two years’ research, we now have a ____better understanding of the disease.
If the machine makes a mistake -- ____ rarely happens -- it gives a warning in the form of a red light.
J.K. Rowling, ____ gifted creator of Harry Potter, is ____ success in the literary world.
--- I wonder if I could possibly use your car for tonight?--- ____. I’m not using it anyhow.
--- Not everything that is best for nature is good for people.--- Yes, would anyone say that economic development should be stopped ______ nature?
My money is ____, so I have to call my parents saying that I am missing them.