Yao Ming is very famous now .However ,his basketball career
Yao Ming is very famous now .However ,his basketball career _______
28. Yao Ming is very famous now. However, his basketball career _______ only after many years of hard work.
A. took on B. took off C. took up D. took out
答案选B ,B的意思是什么?这题该怎么翻译?