—I came all the way to inform you of the time and place of the meeting. —You could have yourself the trouble by calling me.
Mr. Smith was so angry at all ______ Bill was doing ______ he left.
The traditional view is ______ we sleep because our brain is “programmed” to make us do so.
______ he referred to in his article was unknown to the general reader.
____ matters most in learning English is enough practice.
Engines are to machines _________ hearts are to animals.