We are living in an age many things are done on computer.A. whichB. thatC. whereD. when

问题补充：

We are living in an age many things are done on computer.

A. which

B. that

C. where

D. when

答案：

A. which

B. that

C. where

(答案→)D. when

解析：考查从句，首先分析句子，从句many things are done on computer不缺少成份，只有在关系副词里选择，所以选D