I am doing MA English 2nd year and I want to teach in a primary government school. What should I do?

It is a very good idea. Firstly, you have to do the primary teacher's training certificate as PTT, BTC, D. El. Ed., and B. El. Ed etc. After that, you have to clear TET exam either CTET or state TET. And you must be selected in merit list.

For becoming a government school teacher one needs to clear Teacher Eligibility Test. Basically, TET is of two types out of which one is held by Central Government known as CTET and other is held by State Government named as state TET.