"guarantee being" is not correct.
You could use the phrase "guaranteeing" or "guaranteed to be" instead. For example: "This product is guaranteed to be of the highest quality."
Being spectacularly right once doesn't guarantee being right in the future.
They were clearly worried about what would happen without a full guarantee being set aside by Lloyd's.
A snapshot: an inmate in Dovegate prison, in Staffordshire, was told the only way to guarantee being seen by a mental health nurse was to self-harm.
One newspaper seller in Paris said on Tuesday he couldn't guarantee being able to set a copy aside because of the uncertainty about the number of magazines he would receive.
Claudio Ranieri's side now need one point from their final two matches to guarantee being in the knockout stage and it would be a major surprise if that landmark moment failed to arrive at home against Club Brugge in a little under three weeks' time.
The South Africa innings had just about everything, except a challenging number of runs: expert swing-bowling, some defiant late-order hitting and five run-outsone of which contained enough slapstick comedy to guarantee being run on A Question of Sport in the near future.
