问题
选择题
This problem is said _____ three times.
A．to have been talked
B．to have discussed
C．having been discussed
D．to have been talked about
答案
答案：D
此处使用的是不定式的完成被动式。表示“曾经被讨论过三次”。
搜题请搜索小程序“爱下问搜题”
This problem is said _____ three times.
A．to have been talked
B．to have discussed
C．having been discussed
D．to have been talked about
答案：D
此处使用的是不定式的完成被动式。表示“曾经被讨论过三次”。