Question

As he had no parents to teach him , Ari _____(became/become/had become) convinced that he was not a bird at all.​

Answer 1

Answer:

became is the correct answer

Answer 2

This blank can be filled with the word 'became'

So, correct sentence will be:-

As he had no parents to teach him , Ari became convinced that he was not a bird at all.​

Became is the past form of become. This form is used when sentence is in past form.

We can detect whether the sentence is in present, past or future be looking the sentence structure.

Here past forms of word have been use which reflects that this sentence is showing the past activity.

Hence, past form of verb will be used that is became.