Read these sentences and choose the correct variant.

1.
I washed the floor when the painter having gone

I washed the floor when the painter had gone

2.
I had know before about the contract they signed

I had known before about the contract they signed

3.
By the time Doris got to the party, everyone had gone home

By the time Doris got to the party, everyone had go home
​

Buckingham palace, the best known royal palace in the world, is located in Central London. The palace takes (its) name from the house (that) was built in 1703. Sixty years later it was bought by King George 3 for his wife, Queen Charlotte and became known (as) the queen`s house. John Nash, the royal architect, (rebuilt / reconstructed / transformed / converted) it into a palace in the 1820s. Victoria was the (first) queen to live there (from 1837). In the palace there (is) the Queen`s Gallery which exhibits (both) from the royal art collection, (and) drawings by Leonardo da Vinci. The first floor balcony is the scene of formal appearances by the Royal Family on important (occasions ). Bellow it in the forecourt, the colourful ceremony of Changing the Guard takes (place) regularly (generally every morning from April to early August). (If) Her Majesty the queen is in residence, you can see the Union Jack above the palace. … were (opened) to tourists during the summer months in the mid-1990s. The state Rooms of the palace are used for (receiving или entertaining) heads of state and for holding ceremonies where Her Majesty and other (members) of the Royal Family give official titles, honours and (awards).

Мне кажется на сегодняшний день развитие технологий и правда поглотило большую часть подрастающего поколения. это дабы не очень хорошо,у молодёжи пропадает стремление к музыке,художеству,книгам. реальный мир их волнует все меньше и меньше,они могут пропадать в интернете сутками.
меньше выходят на улицу,меньше общаются в живую. социальные сети им заменили радости жизни если так будет продолжаться,у нашей планеты будещее будет не самое радужное. конечно, засорять ее никто не будет,но и ухаживать тоже будет некому.
как-то так,100слов конечно нет,но можешь дополнитб