How to say I couldn't be more sure. in Mandarin Chinese Pinyin

How to say I couldn't be more sure. in Putonghua|Mandarin Chinese Pinyin

Useful Expressions or Words (English)	Chinese Pinyin & Chinese Symbol Translation	Sound
I couldn't be more sure.	wǒ 我 zài 再 yě 也 kěn 肯 dìng 定 bú 不 guò 过 le 了。。

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