Can you rewrite the fllowing sentences in correct English ?

1. Some people have a very bad habit in littering in public .

=> Some people have a very bad habit in => of littering in public .

2.People who live in a dusty area often suffer on diseases.

=> People who live in a dusty area often suffer on => from diseases.

3. In => To prevent flu, we should keep our hands clean , our feet warm .

4. She has => had a sore throat yesterday .

5. Laughing is good with => for health.

1. Some people have a very bad habit in littering in public .

=> Some people have a very bad habit in => of littering in public .

2.People who live in a dusty area often suffer on diseases.

=> People who live in a dusty area often suffer on => from diseases.

3. In => To prevent flu, we should keep our hands clean , our feet warm .