Was it he was playing volleyball on the playground he got hurt?A. that; whenB. when; that

问题补充：

Was it he was playing volleyball on the playground he got hurt?

A. that; when

B. when; that

C. that; where

D. where; that

答案：

A. that; when

(答案→)B. when; that

C. that; where

D. where; that

解析：这是强调句型，其结构是：It was+被强调部分+that/who+其他。判断强调句型的方法是把It was that这三个词去掉，整个句子不缺成分，意思完整。这里被强调部分是时间状语从句when he was playing volleyball on the playground，故选B。