Question

Mona backed ---- of her promise

Answer 1

Explanation:

I think it is "off"…

mona backed off of her promise

Answer 2

Answer:

The correct answer is, Mona backed out of her promise.

Explanation:

• The given sentence lacks a preposition.
• A preposition is a part of speech which is used to bring across the relation between the noun or the pronoun and the verb.
• Example:-

       1) He is busy with a lot of work.

       2) The girl ran towards the car.

       3) The sky is overcast with clouds.

       4) I prefer coffee to tea.

        5) The coin fell into the drain.

• In the given sentence, the preposition out is used to complete the phrase back out which translates to denying, becoming hostile, failing to keep up the promise.
• Another phrase which can be used to mean the same is, "going back on one's word".