He was only in ( ) at that time

He was only in the thirties at that time.如何翻译 1.He was only in ----at the time? He was only in _______ at that time.A．his 30’s B．the 30’s C． 1.he was in the kitchen at that time.he was helping his moth At that time,he was studying in ( ) university.And it was a "He only barely remembers the last time that he was. 1,It happened that he was in the house at that time.(保持原句意思) At that time,Edison was only sixteen years old Julia was the only friend ____I made at that time. he is the only friend ____I made at that time. He was seen____football at that time last Sunday. He was one of (最著名)singers at that time.