Spelling Bee is a contest competitors usually children are asked to spell as many word

问题补充：

Spelling Bee is a contest competitors, usually children, are asked to spell as many words as possible.

A. which

B. where

C. what

D. when

答案：

A. which

(答案→)B. where

C. what

D. when

解析：B 考察定语从句。本句的先行词是contest，在从句中做地点状语，故使用where引导词。C正确。