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．has walked
D．had walked
答案
答案：C
本题考查时态。根据句中时间状语By the time he realizes可知用现在完成时。句意：到他意识到走到陷阱为止，对他来说再做什么已经太晚了。