It would be your duty to bear it if you could not avoid it: it is weak and silly to say y

问题补充：

It would be your duty to bear it, if you could not avoid it: it is weak and silly to say you cannot bear it is your fate to be required to bear.

A. that

B. what

C. when

D. where

答案：

A. that

(答案→)B. what

C. when

D. where

解析：考查宾语从句。本句的what引导起宾语从句what it is your fate to be required to bear.并在句中作为动词bear的宾语。When和where在句中不能做宾语；that在宾语从句中不充当任何成分，只起引导作用。故B正确。