问题
选择题
I'm so glad to see you back, Lucy. How long _______ at your grandma's?[ ]
A. had you stayed
B. did you stay
C. have you stayed
D. would you stay
答案
答案：B
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I'm so glad to see you back, Lucy. How long _______ at your grandma's?[ ]
A. had you stayed
B. did you stay
C. have you stayed
D. would you stay
答案：B