70．When we heard the strong noise，we looked at each other 　　　　．

69．Millie 　　　　　dancing when she was eight years old．

68．Thanks for 　　　　　for Tom and me．

67．If tigers have a baby，they 　　　　．

66．I can’t carry it 　　　　　because it’s too heavy．

65．Nanjing is one of the most beautiful 　　　　　(city) in China．

C)用所给词组的适当形式填空。

live as family，on one’s own，keep the secret，be interested in，in fear

64．My cousin 　　　　　(finish) school next July．

63．They were sorry for the late 　　　　　(arrive) of the plane．

62．Hurry up! Don’t keep us 　　　　　(wait) here so long．

61．I am 　　　　　(true) sorry about what I said．