问题补充：
Mary found her lost pen the day before yesterday?
A. Where do you think it was that
B. Do you think where it was that
C. Do you think it was where that
D. Where you think it was that
答案：
(答案→)A. Where do you think it was that
B. Do you think where it was that
C. Do you think it was where that
D. Where you think it was that
解析：可联系答.案.网客服索取。
