QUES: Thirdparty developers have made virtual touchpad apps for Windows for quite sometime

correct the punctuation.

CORRECTED: Third-party developers have made virtual touchpad apps for Windows for quite sometime.

QUES: Its a particular threat to developing countries as their economies often depend on climatesensitive natural resources

correct the punctuation.

CORRECTED: It's a particular threat to developing countries, as their economies often depend on climate-sensitive natural resources.

QUES: I shall not say anything more said the old King I only go on quietly and always think the best

correct the punctuation.

CORRECTED:
I shall not say anything more, said the old King. I only go on quietly, and always think the best.