.In those days the old woman sit at the door for hours waiting for her son to return fr

问题补充：

.

In those days, the old woman sit at the door for hours, waiting for her son to return from abroad.

A. should

B. used to

C. might

D. would

答案：

A. should

B. used to

C. might

(答案→)D. would

解析：可联系答.案.网客服索取。