问题
选择题
----What were you doing _________ 8 last night?
----- While I was wandering in the street, I noticed a wallet __________ on the ground.
A．at; laying
B．on; lie
C．on; laid
D．at; lying
答案
答案：D
题目分析：句意：昨晚8点钟你在干什么？我在街道上闲逛时，我发现地上有一个钱包。在某个时刻用at，on 表示在某一天或某一天的某个时段。lying作宾语补足语。