问题
选择题
The young man _____ in studying paid no attention to the outside world.[ ]
A. involved
B. involving
C. to be involved
D. being involved
答案
答案：A
搜题请搜索小程序“爱下问搜题”
The young man _____ in studying paid no attention to the outside world.[ ]
A. involved
B. involving
C. to be involved
D. being involved
答案：A