Books are the important records we keep___ man’s thoughts, ideas and feelings.
—Do you have any idea why the engineer resigned? —No. In fact, everyone is ____about it.
It’s required that the students______ mobile phones in their school, so seldom ______ them using one.
“It isn’t the first time I ________ at home,” he said frankly.
The problem should be dealt with by the government ________ ordinary people.
We showed great pity to the poor old man, for ________ life was hard in the past.