VF & Controllers & Extensions

Question 1

What is wrong with the code below. Why will it throw an error?

public class ShowSimilarCases {

public case getCurrentCase(){
	public string cid = apexpages.currentPage().getparameters().get('cid');
	return [SELECT id, priority FROM Case WHERE Id =: cid];
} }

Answer 1

The local string variable access modifier can not be public

Question 2

What is the one tag that is required in an VF page?