Помогите кто может,Даю 50 баллов!
Complete the sentences with the noun or verb form of the words.
Example:Last year I had an operation (operate) on my leg.

1.Eating healthy food can(prevent) some diseases.
2.My grandmother (suffer) frompains in her back.
3.Scientists are (develop) newmedicines all the time.
4.How successful was this (treat)?
5.How many scientists (discover) a new cure for illnesses every year?
6.(prevent) is often cheaper than treatment.