问题
选择题
Have you returned the book to the library ____?
--- Yes, I have ____ returned it.
A．yet, yet
B．already, already
C．already, yet
D．yet, already
答案
答案：D
题目分析：句意：---你把书还给图书馆了吗？---是的。我已经还了。yet常用于现在完成时的否定或疑问句中, already用于肯定句中。结合语境可知选D。