79．　　　 　Tina and Tara are outgoing．They have lots of friends．

78．Peter went to school 　　　　he didn't feel well today．

77．I enjoy 　　　　．I want to be a singer when I grow up．

76．Jack is very funny．He often 　　　　jokes．

75．I think differences are not important in 　　　　　　(友谊)．

74．He 　　　　(相信) he will get good grades．

73．There are many 　　　　(游客) coming to Beijing. Every year．

72．Tom is as 　　　　(体格健壮的) as Jim．

71．It is 　　　　(必要的) to learn English well．

70．Liu Yang is really smart．She is very good at math, physics and c　　　　 ．