68. When the boy playing by the river fell into the river I was out of the room .A. in fl

问题补充：

68. When the boy playing by the river fell into the river, I was out of the room .

A. in flash

B. in a flash

C. as a flash

D. for a flash

答案：

A. in flash

(答案→)B. in a flash

C. as a flash

D. for a flash

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