I can guarantee this ride will be awesome.
What Is A Sentence For Guarantee?
A contract under which one person agrees to pay a perform a duty if the other person who is bound to perform the duty fails to do so.
He gave guarantee for this show-piece
Guarantee is also called as assurity or pledge. If you want to make sentence, here is one sample:
"The guarantee given by the company to the bank is not capable enough to pay back the lender's investment".
"The guarantee given by the company to the bank is not capable enough to pay back the lender's investment".