问题
选择题
By the time he realizes he _____ into a trap, it'll be too late for him to do anything about it. [ ]
A. walks
B. walked
C. had walked
D. has walked
答案
答案：D
搜题请搜索小程序“爱下问搜题”
By the time he realizes he _____ into a trap, it'll be too late for him to do anything about it. [ ]
A. walks
B. walked
C. had walked
D. has walked
答案：D