change the structure of the sentences according to the model Example

Change the structure of the sentences according to the model
Example It's difiicult to explain this problem = This problem is difficult to explain
1.It is rather hard to read his handwriting
2.It's very pleasant to listen to him
3.It was easy to answer this question
4.It's hard to polish a diamond
5.It is rather charming to stay at the house, but it will be inconvenient to live in it
Помогите пожалуйста и можете разъяснить как вы сделали это упражнение заблаговременно Великое СПАСИБО