When I last (1) .....to ben, he (2) ...to be a

When I last talked to Ben, he wanted to be a racing driver.

 Когда я заключительный раз разговаривал с Беном, он желал быть гонщиком.

The sentence is in Past Indefinite (talked, wanted). Past Indefinite is used for a past action. Past Indefinite is formed with the help of the suffix ed for regular verbs. To talk, to want are regular verbs, so we add the suffix ed talked, wanted. Regular verbs take their second forms in past indefinite.

The auxiliary verb of Past Indefinite is to do did.

Negative did + not + verb.

 Interrogative did + subject + verb.