I am sure you can guess what it is about.

我相信你能猜到它是关于什么的。

youdao

I am sure you can get with it if you try.

如果你试一试的话，我相信你一定能适应。

《新英汉大辞典》

I am sure you can make it.

我肯定你能做。

youdao

"Shawn is doing all the right stuff, but I am just not sure you can snap your fingers and all these new shoppers will start running to Best Buy, " said Colin McGranahan, retail analyst at Sanford C.

WSJ: Can This Former Clerk Save Best Buy?

"I am sure we can do it because I know we are better than the team you are seeing on the pitch, " said Benitez.

BBC: Liverpool manager Benitez 'guarantees' top four finish

If you are injured or ill, let me know and I am relatively sure that we can figure something out.

FORBES: NYC Psychiatrist and Hemingway On The Benefits Of Exercise On Work And Depression