I have been living in the United States for twenty years, but seldom_______ so lonely as now.
As is known to all language learners, the newly learnt words will soon be forgotten unless ___________ used in everyday communication.
—Hi, Mark. How was the musical evening? —Excellent ! Alex and Andy performed ___________ and they won the first prize.
The young man couldn't afford a new car. ___________,he bought a used one.
“Perhaps we need to send for Dr. Smith to see what we can do about it,” Father suggested ___________ to his neighbor who had come to discuss the problem.
Anyone, whether he is an official or a bus driver, should be ___________ respected.