Answer:
We look different now, but my brothers and I looked the same as children. My brothers and I ………………did……………………….. look the same as children, but we don't now.
Explanation:
The addition of "did" to look is the same in meaning as the past verb of "look" i.e. "looked." Â One can restructure some sentences that have past verbs with "did" followed by the present tenses of the verbs to form the same meanings grammatically.