Ⅰ.根据句意及首字母或汉语提示完成句子
1．Saturn(土星) is the second biggest p________ in the solar system.
2．The number of the teachers in our school is about three hundred in t________．
3．I________ women often wear saris(莎丽) and they look very beautiful.
4．The population of the small country ________(增长) very fast now.
5．Three quarters of the earth's ________ (表面) is covered with water.
