问题
选择题
— You didn't lock the back door.
— You are wrong. I ______. [ ]
A. have locked it
B. lock it myself
C. did lock it
D. do lock it
答案
答案：C
搜题请搜索小程序“爱下问搜题”
— You didn't lock the back door.
— You are wrong. I ______. [ ]
A. have locked it
B. lock it myself
C. did lock it
D. do lock it
答案：C