—I didn't take notes in class yesterday because i had lost my pen .---You ___mine,i __it.
问题描述：
—I didn't take notes in class yesterday because i had lost my pen .---You ___mine,i __it.
A.must have borrowed; wasn't using
B.may have borrowed; didn't use
C.should have borrowed; hadn't used
D.could have borrow ; wasn't using为什么选D
答
D.
你本可以借我的用嘛,反正我当时也没在用它.could have done本来可以...但却没做