I'm so glad to see you back Lucy. How long　　　　at your grandma's？A. had you stayedB. did yo

问题补充：

Im so glad to see you back，Lucy. How longat your grandmas？

A. had you stayed

B. did you stay

C. have you stayed

D. would you stay

答案：

A. had you stayed

(答案→)B. did you stay

C. have you stayed

D. would you stay

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