依次填入下面横线处的语句，衔接最恰当的一组是(　　)　　　　　　。于是，她便用牙齿把自己吐的丝一根根咬断，咬破自己织下的茧。 ①她埋怨、气恼，然后就是焦急，甚至折磨自己，同时用死来对突不破的网表示抗议②那是用一种细细的、柔韧的、若有若无的丝织成的，是痛苦的丝织成的③当她一觉醒来，她突然明白拯救自己的，只有自己④她在自己的生活中织下了一个厚厚的茧⑤但是，她终于被疲劳征服了，沉沉地睡过去

______ the extreme levels of air pollution, city authorities have started to take measures to quickly reduce pollution levels and protect city dwellers.

It is well known ___ a person eats causeschanges in the body

I have a(n) ________. He is my father’s brother.

I called you at 5:00 yesterday afternoon, but no one answered.—Sorry. I _______ football with my friends at that time.