Question

sita is singing very well ( change into simple past tense)

Answer 1

Sita sang very well.

____________

Answer 2

Sita sang very well.

Rules for converting into simple past tense;

1. Sing is an irregular verb.
2. For irregular verbs there is no specific rule for converting them in simple past tense.
3. The sentence is given in present continuous tense.
4. The present tense form of the verb will be sing and its simple past tense will be sing.