-oh god!What did you do to my report?-Terribly sorry.My mind __ and I will type it again for you.
问题描述：
-oh god!What did you do to my report?-Terribly sorry.My mind __ and I will type it again for you.
A.has wandered B.had wandered C.is wandering D.was wandering
答
d为什么不是B呢？这里是指当时我的思想开小差了，过去进行b 是过去完成，这里没有完成的含义