Выделите запятыми придаточные предложения, там, где это необходимо. В каких предложениях можно опустить относительное местоимение. Почему? Persons who break the law will be punished.
This is the dictionary which I bought yesterday.
A man who had taken me across the ferry is a boatman.
The man who lives in floor No. 13 has been arrested.
Mrs Jones who is now seventy years old still lives in the High Street.​

Nowadays, many people forget that such courtesy,especially the youth of today.I remember my grandmother who was very religious and polite.When I was (-) as a teenager I always stay (s) at my grandma's.So you come to her,and she gives you something good,yummy feed.Remember how I always asked (but) when we sat over a Cup of hot tea in the winter,when the window was raging snowstorm,sit and talk heart to heart with his grandmother.And we talked about it:
-You remember your young years...-he started the conversation the old lady.-at that time it was not so as now...and the other village people and others.In our times the youth has always been polite.
-Grandma!What is "politeness"?
-Well,-she sighed,-Politeness is a human characteristic which characterizes the personality good manners, good deeds and education.Under the politeness is usually described as the ability to communicate respectfully with people, a willingness to find a compromise and listen to opposing points of view.So that was my wonderful day at my grandmother's.

Britain which is formally known as the United Kingdom of Great Britain and Northern Ireland is the political unity of England, Scotland, Wales and Northern Ireland. 
It is located on the British Isles
Its total area is about 244 thousand square kilometres. 
The coasts of the UK are washed by seas of 2 oceans:  the Arctic and the Atlantic.
The scenery is the coastline is rather picturesque.
The capital of the UK is London.
The official language is English.
The national symbols of the UK are the Red rose and the Lion, the flag 'Union Jack', and the anthem 'God Save the Queen'.
Its form of government is a constitutional monarchy.
Officially the supreme legislative authority is the Queen in Parliament
and the two Houses of Parliament .and the elected House of Commons. 
But The Queen officially opens each Parliamentary session.
The  three major parties are the conservative party, the new labour party, and the democratic liberal party.
The largest cities are Birmingham, Glasgow, Liverpool, Manchester, Edinburgh, Belfast and Cardiff.
The chief river is the Thames River 
Britain's major industries include  iron and steel engineering, shipbuilding, electronics.