— You keep on coughing. What's the matter? — Oh, I've got a cold. Nothing serious, ____.
He thought that painting copied by a modern artist was ______ great value and bought it ____ over a thousand dollars.
Let him who tied the bell onto the tiger take it off -- _____ started the trouble should end it.
Social networking is an important factor _______ business success.
During the expedition in the mountains we passed through a place where in a little while we all lost out ______ of direction.
He is free now, so he ______ go with us, but he hasn’t decided yet.