问题
选择题
I ______ her, but I never could.
A．ought to help
B．must help
C．must have helped
D．ought to have helped
答案
答案：D
搜题请搜索小程序“爱下问搜题”
I ______ her, but I never could.
A．ought to help
B．must help
C．must have helped
D．ought to have helped
答案：D