单选题_____ you didn’t know the rules won’t be a sufficient excuse for your delaying submitting the report.AIt isBThatCBecauseDWhat

单选题
_____ you didn’t know the rules won’t be a sufficient excuse for your delaying submitting the report.
A

It is

B

That

C

Because

D

What


参考解析

解析:
句意:你不知道规定,这并不是迟交报告的充分理由。you didn’t know the rules是一个完整的句子,用that引导主语从句做句子的主语。

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