----Is it my age the boss minds?----I’m afraid not. He will consider necessary to have a

问题补充：

----Is it my age the boss minds?

----I’m afraid not. He will consider necessary to have an experienced assistant.

A. which; it

B. that; it

C. which; that

D. that; that

答案：

A. which; it

(答案→)B. that; it

C. which; that

D. that; that

解析：考查定语从句及形式宾语。根据句意。老板在乎的是我的年龄，可知定语从句修饰的是整句话，故引导词用that，下文代词指代后面不定式内容作形式宾语，故用it，选B。