Question

----Oh, you are here. I’m looking for you all the morning.      ？
----To the library.

A．Where have you gone	B．Where will you go
C．Where are you going	D．Where have you been?

Answer 1

D解析:
时态的考察 句意为“你在这里。我找了你一上午。”根据答语“我去了图书馆”，可知现在不在图书馆。所以应用现在完成时，have gone to “去了” have been to“去过”。