25. – Tom, it's too late. Our son ________ be back.– Don't be anxious. I dare say he ________ have some extra work to do.
The native Canadians lived in __________ with nature, for they respected nature as a provider of life.
The _________ at the military academy is so rigid that students can hardly bear it.
_________ by the superstars on television, the young athletes trained hard and played intensely.
He is _________ about his chances of winning a gold medal in the Olympics next year.
University graduates should develop such skills as critical thinking, and inter-personal communication, ________ are important in personal development.