问题
选择题
— Why didn't you warn them of the danger ahead?
— But what otherwise? They never listen to me.
[ ]A. could I do
B. should I do
C. could I have done
D. must I have done
答案
答案：C
搜题请搜索小程序“爱下问搜题”
— Why didn't you warn them of the danger ahead?
— But what otherwise? They never listen to me.
[ ]A. could I do
B. should I do
C. could I have done
D. must I have done
答案：C