Leave it with me —I'm sure I can sort it out.

把这事留给我吧—我一定会解决的。

《牛津词典》

I'm not sure—I can find out for definite if you like.

我没把握—如果你愿意我可以去核实。

《牛津词典》

I'm sure I can rustle you up a sandwich.

我保证能马上给你弄份三明治。

《牛津词典》

"I am sure it can be removed."

VOA: special.2009.09.26

Because,you know,you can't trust me,and so you have to check me out and make sure I'm not lying to you.

因为你不能相信我,你要弄清楚我是否对你们撒谎了。

耶鲁公开课 - 新约课程节选

Sure! I think I can do that. That's one of the things that I teach here so I hope that I can.

当然！这是我在这里教的课程之一，所以我想应该能帮到你。

英语阅读：技巧 - SpeakingMax英语口语达人

But I can make sure -- I can do my best to make certain that they get a chance to succeed or fail on their own merits, just like I did.

WHITEHOUSE: President Obama Speaks on Holding Head Start Programs Accountable | The White House

"The geography of the force and rural areas bring unique challenges that I will seek to understand so I can make sure we meet the needs felt by everyone, including our more rural, isolated communities, " he said.

BBC: Dyfed-Powys commissioner first to choose new police chief

And fortunately, the overwhelming majority of Muslims around the world are peace-loving, are interested in the same things that you and I are interested in: How do I make sure I can get a good job?

WHITEHOUSE: President Obama News Conference