A1
at that time
Dictionary examples:
My phone was new then. Now it's old. (0.0)
I was a baby then. Now I'm big! (0.0)
My dad had hair then. Now he's bald! (0.0)
I was working in the city then. (6.7)
I'm having a day off on Friday - I could meet you then. (13.9)
I saw her at Annie's but I haven't seen her since then. (16.6)
Give it to me next week - I won't have time to read it before/until then. (20.6)
I'll phone you tomorrow - I should have the details by then. (35.4)