Mr Clark thanked God for saving their lives and turning he felt was a tragedy into a blessing.
A. which
B. what
C. how
D. that
网友回答
A. which
(答案→)B. what
C. how
D. that
解析：考查宾语从句。本题中的what he felt was a tragedy是动词turn的宾语，句中的he felt可以省略，句子缺少的是主语,用what引导起这个宾语从句，并在句中做主语。句意：Clark先生感谢上帝救了他的命。并把他认为是悲剧的事情变成了一个开心的事情。故B正确。