问题
选择题
_______in thought, he didn't notice that the teacher was right in front of him. [ ]
A. Losing
B. To lose
C. Being lost
D. Lost
答案
答案：D
搜题请搜索小程序“爱下问搜题”
_______in thought, he didn't notice that the teacher was right in front of him. [ ]
A. Losing
B. To lose
C. Being lost
D. Lost
答案：D