问题
选择题
The old man was taking a walk, ________ by his grandson. [ ]
A. supporting
B. supported
C. being supported
D. having supported
答案
答案：B
搜题请搜索小程序“爱下问搜题”
The old man was taking a walk, ________ by his grandson. [ ]
A. supporting
B. supported
C. being supported
D. having supported
答案：B