Before she ( become ) a famous actress, she (be) a cook
Use simple past and the past perfect

Before she became a famous actress, she was a cook

Explanation:

1. Became

2. was

Explanation: Instead of using the word become, use the word became. Also instead of be, use was or used to be a cook.

if its apex this should be the correct answer

war information to be released publicly must first be deemed useless to the enemy

i will say by providing an example of nationalism to explain the idea..

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