完形填空
Being not far from the sea, London is famous 1 its fogs. The worst of them2 on December 4, 1952. All movement in the town came to a stop. It was almost impossible to drive or ride 3 .The streets which led to the centre were filled with4 that moved two miles an hour. Soon, however, the traffic was stopped. Being left by their5 , the buses and cars stood empty in the streets. Many who usually travelled by bus took the underground(地铁). But there were 6 many people there that the gates had to be closed. Being caught in the fog, people felt their way along the walls of houses with one hand, while they put out 7 in front of them so as8 knock against something or somebody.
At the Opera House(歌剧院) they got through the first act of La Traviata before so much fog had spread into the building that the9 could not see the conductor(乐队指挥).
It was a10 fog, indeed, and as many as 4, 000 people in London lost their lives.