—Why did you leave the water running in the sink? —My goodness! I guess I to turn off the

问题补充：

—Why did you leave the water running in the sink?

—My goodness! I guess I to turn off the tap．

A. forgot

B. have forgotten

C. forget

D. had forgottten

答案：

(答案→)A. forgot

B. have forgotten

C. forget

D. had forgottten

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