71．In Singapore，more than three quarters of the 　　　　　(人口)are Chinese．

70．My teacher’s 　　　　　　　　(影响)made me study science at the university．

69．Her father　　　　　 (鼓励)her to work hard and try for the exam yesterday．

68．Do you know who 　　　　　　　　．(发现)America?

67．England is also a 　　　　　　　(欧洲)country besides France．

66．He has been　　　　　　 (收集)old books for ten years．