in 1914 　　　　　　the First World War broke out?A. Was that that　　　B. Was that whenC.

问题补充：

in 1914 the First World War broke out?

A. Was that, that

B. Was that, when

C. Was it. that

D. Was it, when

答案：

A. Was that, that

B. Was that, when

(答案→)C. Was it. that

D. Was it, when

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