Question

they have finally ____ it for years scientists debated whether tbe sound of crackling knuckles came ____ bubbles being formed in the fluid around our joints ___ from bubbles popping but now a study ___ found that the tiny bubbles make ___ popping sound when they partially collapse .gap filling​

Answer 1

Answer:

studied,from,.....,is,the

Explanation:

i can't guess the 3rd gap...do u have any options?

Answer 2

1) Studied
2) from
3) or
4) has
5) the