1.The agricultural land is hilly and the (irrigate) is poor.
答案:irrigation
2.A few children will tend to suffer from (separate) from their parents.
答案:separation
3.A new railway is being (construct).
答案:constructed
4.They are focused on increasing their personal wealth by any (mean).
答案:means
5.In England,the (change) weather is a topic which is often talked about.
答案:changeable