The letter is from my sister, _____ is working in Beijing. A which B that C whom D who
I know little about the accident because not much_________ about it up to now
I’ve been away for only three years, _____ I can hardly recognize my hometown
In China, you _____ vote when you are 18.
The professor could hardly find sufficient grounds _____his arguments in favor of the new theory.
Many workers were organized to clear away remained of the World Trade Center.