题目内容：

When did your father come back home from Shanghai?___
A Since two days ago
B For two days
C In two days
D Two days ago

优质解答

D.
A.Since two days ago 自从两天前,多用于现在完成时
B For two days 两天了,多用于现在完成时
C In two days 两天内,多用于将来时
D Two days ago 两天前,多用于,一般过去时