问题补充:
––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:
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。