70. You may never experience an earthquake or a volcanic eruption in your life, but you will witness changes in the land.
71. You were at the meeting yesterday. Do you think he was sound on what be said.
72. The argument can't be refuted at the moment, but that doesn't necessarily mean that the committee will accept your program.
73. Would you please try to make him change his mind? He always swallows anything you tell him.
74. In the construction of the new railway, they voluntarily sacrifice the part —the whole.A. for the aim of C. for the sake of