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
根据上文的过去时态可知，此句谈的是过去的事，故排除A和C。根据语境排除D。
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
根据上文的过去时态可知，此句谈的是过去的事，故排除A和C。根据语境排除D。