What was his job?

He was a well-known doctor, so he often __________ patients.

attended

What did he discover?

He discovered that the water ______________ cholera.

was linked to

What helped him draw the conclusion?

He drew the conclusion with the help of a _______ map.

valuable

What did he do after the discovery?

First, he ______________ the source of the water and found the river had been polluted. Next, he __________ people not to use the polluted water. Then, he instructed the water company not to ________ people ______ polluted water. Finally, “King Cholera” was __________.

looked into

instructed

defeated

Revision