Jamila crept down the stairs through the hall and into the kitchen
Lonely quiet slowly overjoyed
Mercutio and Benvolio are the opposite like night and day. Benvolio is peace seeking and gentle, whereas Mercutio will fight and yell and duel until the day he dies (literally) Mercutio is mocking the reasons for quarrels towards Benvolio and it is humorous because it is the exact opposite of Benvolio's nature to do what Mercutio accuses him of. This, in a way, illustrates the close friendship between the two men.
Most people frown about #4. It is a comma splice which means that 2 main clauses hung together by a comma. The better way to do it is with a ; since the two statements are unrelated. In this case it is a very fine point of grammar which is more annoying than wrong.
#1 is wrong because there is no main clause. The bell is the beginning of the main clause.
#2 is passive. It's not wrong, but the writing style could be better.
#3 <<<< answer The and is the proper way to connect 2 predicates.
One of the euphemisms in "From Emperor to Citizen" is Puppet. It refers to Pu Yi who was called Emperor, but was actually controlled by the Japanese. Another euphemism is Forbidden City, because it wasn't forbidden for those who worked and lived there.