Supply either the or a(n) in the blanks in these sentences

A. There is a shortage of bananas.The shortage of bananas will continue for some weeks.

B. There has been the change  of government . a change of in government will probably mean a change of policy. the change of policy may lead to a short period of instability.The short period of instability could create a feeling of insecurity.

C.The speaker suggested the special commission to study economic conditional. he said that the  special commision should investigate the demands of a workers and the conditional employers.Such the commission would reder the very valuable service to a nation