I am very regret what I have done during my middle school.

我非常后悔中学时代做过的事情。

youdao

He is very regret loosed the opportunity to get scholarship.

他很后悔失去了获得奖学金的机会。

youdao

I thought, he must be very regret, regret, ruined his future.

我想：他一定很后悔，后悔当初的举动，毁了自己的前程。 。

youdao

But for me, very regret that I missed this great opportunity.

WHITEHOUSE: President Obama and Prime Minster Yingluck Speak Before Bilateral Meeting | The White House

We very much regret having to take this action particularly during the popular spring touring season.

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However, he told the British-Irish Council in Dublin he would very much regret seeing Scotland leave the union.

BBC: Devolution for English regions call by MP Paul Murphy