––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
网友回答
A. yet, yet
B. already, already
C. already, yet
(答案→)D. yet, already
解析：yet和already都表示已经的意思，区别是前者多用于疑问句和否定句，后者用于肯定句。句意：你已经把书还给图书馆了吗？——是的，我已经还了。结合语境可知选Ｄ。