1．The prize will go to the writer ________ story shows the most imagination.
A. that B. which
C. whose D. what
[解析]句意：这个奖项会给故事最具想象力的作者。根据句子结构可知，从句中缺少定语，故C项正确。that 与 which 在句中只可作表语、主语和宾语；what 不能引导定语从句。
[答案]C
2．Between the two parts of the concert is an interval, ________ the audience can buy icecream.
A. when B. where
C. that D. which
[解析]句意：在音乐会的两部分之间有一段休息时间，那个时候观众可以买冰激凌。分析结构可知，定语从句先行词为 interval，定语从句缺少时间状语，用 when 引导，故A项正确。
[答案]A
