Question

She wrote a complaint letter to the ministry of education

Answer 1

She wrote a complaint letter to the ministry of education,didn't she?

Explanation:

First we have to se that whether the sentence is positive or negative. If the sentence is positive then we have to add a negative question tag.

But if the sentence is negative then we have to add a positive question tag.

Hope it helps you.

Answer 2

Sentences negative and we have to put a positive tag