【题目】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
在线课程【答案】B
【解析】试题分析：先行词是a contest，定语从句中不缺主宾表，缺少地点状语，用关系副词where(=and in the contest)引导定语从句。句意：“Spelling Bee”是指参赛者，通常是儿童，被要求尽可能多的拼写单词的一种比赛。选B项。