Grandpa has returned the book to the library____.A.yetB.alreadyC.evenD.still选什么?为什么?

Grandpa has returned the book to the library____.A.yetB.alreadyC.evenD.still选什么?为什么?
Grandpa has returned the book to the library____.
A.yet
B.already
C.even
D.still
选什么?为什么?

Grandpa has returned the book to the library____.A.yetB.alreadyC.evenD.still选什么?为什么?
B.already 现在完成时 肯定句 用 already

选B，本体时态为现在完成时。already：已经
yet：还（没），但是
even：甚至，连，即使
still：仍然，还，依旧