This problem is said three timesA.to have been talkedB.to have discussedC.having
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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
试题答案
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”。