_合肥成考网

29请选择出最佳答案填入（　　）

• A、sign
  

• B、signal
  

• C、number

• D、shape

Of all ____ reasons for my decision to become a university professor, my father's advice was ____ most important on.

• A、the；a
  

• B、不填；a
  

• C、不填；the
  

• D、the；the

53__________?