CAE prepositions

I believe ____ your ability to solve the problem.

The patient who came last night with a chest injury is being operated ____.

She had no other dress suitable ____ the occasion.

The heated argument resulted ____ tragedy when one of the men pushed the other into an oncoming car.

Tommy has been persisting ____ undermining my authority ever since he was given that promotion.

We were shocked ____ his admission of wrongdoing.

A good movie will always distract me ____ my worries.

The manager attributed their failure ____ a lack of preparation.

I know that I disappointed my parents ____ my low grades this semester.

Why do you persist ____ bothering your sister like that?