As a new graduate, he doesn’t know _______ it takes to start a new business.
Mr. Smith is ________ a good professor ________ all of us students respect.
“I’d like to give my thanks to those _________ help my son will be able to survive his terrible disease,” said the mother on TV.
Whether you believe it or not, it is _________ that causes your illness.
Such crimes may be so complex that months or years go by before anyone______ them.
Well, that’s just the deal. _________ price will be out of my reach.