Put the verbs in brackets into correct past tense: — How long (you/live) in Sydney before you (move) to London?
— We (live) in Sidney for ten years when the company that Richard (work) for (offer) him a position at the London office
— (You/want) to come back to London?
— Yes. We (be) both excited about coming home so Richard (accept) the job immediately​

— How long had you lived in Sydney before you moved to London?
— We had lived in Sydney for ten years when the company that Richard worked for offered him a position at the London office.
— Did you want to come back to London?
— Yes. We were both excited about coming home, so Richard accepted the job immediately.

Explanation:
In this dialogue, we use the past perfect tense for actions that were completed before another action in the past. For instance, "had lived" describes the time spent in Sydney before the action of moving to London. Similarly, "had worked" refers to Richard's employment before the company offered him the new position.