Question

1)Transportation noise has invaded vast areas of our cities (make compound)
2)Operation of this type have 95 per cent success rate (change the voice)
3)Unfortunately most sufferes donnot afford to buyor maintain the hearing aid (make complex)
4)Instead of lying around in some duty attic,it would help make rich ,life-giving humus(make compound)

Answer 1

1) Not only the transport noise has invaded, but also vast areas of our cities.

2) The success rate has been 95% for operations of this type.

3) Unfortunately those who suffer most, cannot afforf to buy or maintain the
       hearing aid.

4) It lies around in some duty attic, else it would help make rich life giving humus.