Question

【题目】— When did you begin to learn English? — ________. Because I needed it in my work.
A.In my thirty
B.In my thirtieth
C.In my thirties

Answer 1

【答案】C
【解析】句意：---你什么时候开始学英语的？---在我三十多岁时，因为我工作中需要它。in one's thirties在某人三十多岁时，所以答案是C。