I bet she was annoyed at having to write it out again.

我敢说她对不得不重写一遍感到恼火。

《牛津词典》

That was when she really started running off at the mouth. I'll bet she hasn't shut up yet.

那就是她真正开始唠叨的时候。我敢说她还没闭嘴。

《柯林斯英汉双解大词典》

B: Yes, but I'll bet she won't again.

是的。但我打赌她再不会了。

youdao

I bet she saw me coming.

VOA: standard.other

I bet she's very attractive like you.

我敢打赌她肯定跟你一样有魅力。

It sounds like 实战 - SpeakingMax英语口语达人

But those who bet she is a shoo-in are overlooking how the political debate is likely to change.

FORBES: Three Reasons Why Hillary Will -- Unfortunately -- Never Be President

But I bet she can't cook a better steak than me.

FORBES

It is a pretty sure bet that she would keep onion prices and communal passions down.

ECONOMIST: Congress is poised to return to power, but not just yet