In December 1952，a very， 4 dark cloud came down over．London．It was the 5 smog Londoners had ever had． 6 of it was bad factory smoke． Nearly fifty people died in road accidents. But many more people became unhealthy．The smog was very 7 for old people and children．One man said，“The streets were almost 8 because people stayed at home as much as possible．The air was very thick，and you could almost cut it with a knife．”

After three weeks，the smog began to 9 ．But in the following weeks and months，over 4000 people died as a 10 of the smog．

( )1 A．hurried B．stayed C. had D．minded

( )2. A．already B．easily C．luckily D. hardly

( )3 A．If B．So C．Though D．Whether

( )4． A．thin B．thick C．light D．clear

( )5． A．furthest B．hottest C．worst D．nicest

( )6． A． Much B．Many C．Few D. A few

( )7． A. quiet B．dangerous C．favorite D．weak

( )8． A．busy B．empty C．enjoyable D．dirty

( )9． A．arrive B．shine C．forget D．lift

( )10． A．beginning B．part C．usual D．result