There is an increasing concern _____________ about Ebola infection. Every country has taken necessary measures to prevent it.
It is widely _________ that smoking can cause cancer.
_________ appeared to me that he enjoyed the food very much.
_________ all the inventions have in common is _________ they have succeeded.
_________ you don't like him is none of my business.
—How about going to Beijing for our holidays?—That's splendid. _________.