答案C
本题不仅考查考生的分词使用能力,而且考查对复杂句型结构的判断识别能力。定语从句they would like to see修饰先行词the plan,关系代词that则指代plan作see的宾语,carry out的动作对象是plan,故用过去分词作see的宾补。
The manager discussed the plan that they would like to see ________ the next year.
C. carried out
分析,把先行词放进去,they would like to see the plan carried out the next year.
所以是see sth done 结构,过去分词作宾语补足语。