单项选择题

It was four days later that she remembered having left her dictionary in the library.

A.四天后,在图书馆她才想起忘了拿字典。
B.四天后,她才记得带着字典离开图书馆。
C.过了四天她才想起把字典忘在图书馆了。
D.过了四天她才想起把字典放到图书馆。