把下列各数填在相应的大括号里．

﹣2，0.50，3$\frac{1}{5}$，432，20，0，﹣$\frac{1}{3}$，0.789，﹣2016，3

整数集合{                                          …}

负整数集合{                                        …}

正分数集合{                                       …}

负分数集合{                                       …}．

结合经济生活有关知识回答下列问题：  

____ (失业) for two years because of my sickness, I decided to look for a part-time job.

    Have you ever been to London? Which famous sites did you visit? Or, if it is the first time that you____(be) there, which one will you check out?

    Some world famous ____(culture) sites may already be on your list: Buckingham Palace, Big Ben and the London Tower. However, a tour of London would be incomplete____ checking out the London art scene. As a guidebook London's Secrets: Museums & Galleries put it, London's art is a lot like____ city itself — “diverse, vast, and in a constant state of changes. From old masters to street art and everything in between, London has it all.”

    In fact, according to The Telegraph, museums and galleries were the most ____(visit) attractions in Britain last year. The British Museum____ celebrated its 225th anniversary this year, had the most visitors, at 6,701,036.

    According to The Art Newspaper, the British Museum's increased ____(popular) is down to its exhibitions, particularly its Life and Death in Pompeii and Herculaneum show ( March-September 2017 ).

    There are more than 7 million artifacts(文物) in the British Museum. Not all of them are on display, but much of the collection ____(constant) rotates(轮换), so you'll see something new with each visit. So____ you're an art lover or just looking for a fun time, you're sure____(find) inspiration in London.