He must be from America can be judged from his accent.A. thatB. whichC. itD. where

问题补充：

He must be from America, can be judged from his accent.

A. that

B. which

C. it

D. where

答案：

A. that

(答案→)B. which

C. it

D. where

解析：考查定语从句。本题which引导非限定性定语从句，指代前面一件事，选B。