72．It is very interesting for them ________ (remove) the snow in winter．

71．Mr. Wu invited Kitty ________ (join) their trip to the World Park．

70．We must do something to protect these ________ (danger) birds．

(C)用括号中所给的动词的适当形式填空。

69．Timmy was ________ (trap) under the stones and bricks, so he shouted for help．

68．All the drivers have to drive slowly and carefully because of the ________ (fog) weather．

67．It’s ________ (usual) for him to come back home late because he always arrives home before his parents．

66．The farmers in the village live a happy and ________ (health) life．

65．If Sandy has a computer, she will get enough ________ (信息) for her report on Zhalong Nature Reserve．

(B)用括号中所给的词的适当形式填空。

64．The Chinese government always ________(鼓励，劝告) farmers to leave the giant panda reserves．

63．Kitty and I felt ________(难受，生病) for most of the trip to the World Park．