Mr．Smith, a strong man worked in a bank in England

1．________

suddenly fell ill in last week．After some examination, his

2．________

doctor said the terrible pain was in his stomach was probably

3．________

caused by some disease．But Mr．Smith believed he have eaten

4．________

something unfit to him．Then some day Mr．Smith thought

5．________

of the chemical factory where he worked．It stood right on

6．________

the seaside．Poison flowed into the sea．People never swim

7．________

in the sea, the water harmed everything in it．The air

8．________

around was sometimes poisonous too．Mr．Smith stopped thinking．

9．________

He was shocked by a conclusion－the root of the illness．

10．________