Parents complain their children are behaving unreasonably _____children consider their parents to be old-fashioned.
79. Ming and Qing tombs have ______ relatively undamaged. They, ______, have suffered some damage from centuries of exposure, wars and deliberate destruction.
80. _______ the right decision _____ the future is probably the most important thing we will ever do in our life.
81. Male and female students are quite different from each other ______ the age at which they begin to develop an intellectual self-discipline.
82. Recently CCTV station has taken great _____ to make a program that reviews the important ______ of the past 20 years.
83. --- I’ve looked everywhere, but I haven’t found any black ink. --- Then, I’m afraid there is _______ left.