Question

an apple a day keeps the doctor away add question tag

Answer 1

Answer:

An apple a day keeps the doctor away, doesn't it?

OR

An apple a day keeps the doctor away, isn't it?

Explanation:

In the first sentence, the question tag is with respect to what the apple does. In the second, it is with respect to the entire saying taken as one single truth.

Considering that "An apple a day keeps the doctor away" is a single piece of truth, the second option (isn't it) is better suited.

Answer 2

Answer:

an a day doctor keep away , isn't it?