问题
选择题
He was last seen _________in his office at about 7:15 p.m..
A．work
B．working
C．to work
D．worked
答案
答案：B
此题重点考查固定结构see sb doing sth 表示看到某人正在做某事。
搜题请搜索小程序“爱下问搜题”
He was last seen _________in his office at about 7:15 p.m..
A．work
B．working
C．to work
D．worked
答案：B
此题重点考查固定结构see sb doing sth 表示看到某人正在做某事。