SAT Writing Mistake

Hey! Can someone help me spot the mistake in this sentece?

New facts, especially when they replace beliefs already in one’s mind, commonly take as long as several weeks being fully accepted as true.

I think it’s ‘‘being’’, am I right?

I would agree that “being” should be “to be.”

Thanks @bogdangles. Yup, it sound better with the infinitive form.

I think the infinitive form missed the point. It should be “BEFORE being fully accepted as true”.

@AmericanGothic, so the infinitive form is not correct? ‘‘Before being’’ sounds correct too.

@AmericanGothic and @WeirdUserName both forms are correct and make grammatical sense. At that point, it becomes a matter of personal style/taste.

Thanks @normanxi.

“before they are” is also an acceptable fix.

acceptable, but slightly awkward and longer than necessary.

Just to be clear: neither “slightly awkward” (which the formulation definitely is not, btw) and “longer than necessary” are rules tested on the SAT writing section.

…i mean i never said they were…