Itneveroccurredtome

问题详情：

It never occurred to me ________ you could succeed in persuading him to change his mind.

【回答】

that　it为形式主语，真正的主语为后面的从句，从句中不缺少成分，且句意完整，因此用that。

知识点：连词

题型：阅读填空