--Psychologists think it's bad tobecause thinking too much about oneself may cause depression. --It seems that it is possible to cure depression by focusing on other people. A. pay attention to B. be paid more attention C. be paid more attention to
--The world's population is getting larger and larger. It's a serious problem. --Yes. Scientists will have tonew waysfood problem. A. think of, to solve B. think over, of solve C. think about, about solving
--I know not lung about the history of the telephone. Could you tell me? --Yes. In 1876. A. when the telephone invited B. who invented the telephone C. when the telephone was invented