what has happened is that  people cannot confess fully to their dreams,as easily and openly as once they could ,  主语是what has happened 吧？that 引导表语从句吗？

网校学员小白一**在学习《2021考研蜕变计划标准班【政英+专业课1对1】（2年制）》时提出了此疑惑，已有0人帮助了TA。

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