___ young man , first he worked in a shop and later in a post office .
A. Being a B. When he was C. As a D. Be a
___ young man , first he worked in a shop and later in a post office .
A. Being a B. When he was C. As a D. Be a
C
答案B少冠词a，答案D是祈使句，显然是错误的。答案A中being通常表示原因，因此不合题意。As a young man 在这里相当于When he was a young man，表示时间。