问题
选择题
Why did you just sit and watch？ You _______ me.
A．could help
B．should help
C．could have helped
D．must have helped
答案
答案：C
搜题请搜索小程序“爱下问搜题”
Why did you just sit and watch？ You _______ me.
A．could help
B．should help
C．could have helped
D．must have helped
答案：C