The correct form (passive voice) of the verb "bring" in the simple past tense would be "brought."
Explanation:
1. The original sentence is in active voice: "The sodas (bring - simple past) by my brother."
2. To change it to passive voice while maintaining the simple past tense, we need to use the past participle form of the verb "bring," which is "brought."
3. The corrected sentence in passive voice would be: "The sodas were brought by my brother."
By changing the verb "bring" to its correct past participle form "brought," we have transformed the sentence into passive voice while ensuring it remains in the simple past tense.