It is necessary that we (practice) ______ criticism and self-criticism.

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问题 It is necessary that we (practice) ______ criticism and self-criticism.

选项

答案practice

解析我们有必要开展批评与自我批评。it做形式主语，其后面的表语若为necessary，right， strange，natural等时，that引导的主语从句要用虚拟语气(should+动词原形)，should可以省去。

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大学英语三级A级

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