Adjectives that can either masculine or feminine may end with what letters

Adjectives that can either be masculine or feminine end with a or o. Some adjectives that end with e like inteligente stays with the e when it's either masculine or feminine. Just keep in mind that you don't need to change an adjective that ends with e to a or o. Just leave it as it is.
Hope this helps

1. a. sí, conocen a tu amiga maria2. b. sabe