ответить на вопрос 4. what sights in england would you advise me to visit?

 I advise you to visit London. There you shoud visit The National Gallery, Madam Tussaud`s museum, House of Parlament.

There are a lot of interesting places in England.  In London I would advise you to see Big Ben,  the most famous clock in the world.  Buckinham Palace, Trafalgar square and the Tower are also exceptionally interesting.  There are also a lot of  museums in London where you can see a lot of wonderful things.  I would advise you to visit the Sherlock Holmes Museum devoted to  the world-famous private detective. Outside London you should certainly see Stonehenge,  an ancient religious site.  In Liverpool you can visit the Beatles museum where you will learn a lot of of new facts about the greatest band in the world.