[Grammar] Prior to

[oksuz_]

Hi,

- ........ discovery of insulin, it was not possible to treat diabetes.

Could you tell me which option would be correct for the gap ?

-Prior to the

or

-To prior

In my opinion, first one is the correct one.

Thank you in advance..

 

[GoesStation]

You're right, "Prior to the discovery" is correct.

 

[emsr2d2]

We don't start any sentence with "To prior" in order to mean "Before".