Do you have to put a definite article before ojos everytime? like yo tengo los ojos ella tiene  los ojos azules.

When you’re referring to the actual color of your eyes, you don’t need to use los before eyes. But let’s say, you get something in you eye that makes it a little red, or you cry a lot, or laugh a lot and someone asked you what happens with your eyes... you say, tengo los ojos rojos

1-b si, conocemos a tu amiga maria2-d saben