4. ......... he live in Samara five years ago?

Step-by-step solution:

1. The sentence is a question in the past simple tense, indicated by "five years ago".
2. The subject is "he", and the main verb is "live".
3. In the past simple, when forming a question with a main verb other than "to be", we use the auxiliary verb "Did" followed by the base form of the main verb.

Answer: Did he live in Samara five years ago?