✔ 最佳答案
since 一個時間應該係用 present perfect tense 喎
It has been listed on the Main Board of The Stock Exchange of Hong Kong since 2 October 1982.
但如果一定要呢兩個其中一個就 It is listed on the Main Board of The Stock Exchange of Hong Kong since 2 October 1982. 啦, 因為依家仲係事實