问题
选择题
Did you notice a man _______ into the meeting room when you passed by? [ ]
A．walk
B．walks
C．to walk
D．walking
答案
答案：D
搜题请搜索小程序“爱下问搜题”
Did you notice a man _______ into the meeting room when you passed by? [ ]
A．walk
B．walks
C．to walk
D．walking
答案：D