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
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| 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：C