Word Formation Prefixes 2

The camera which I bought has two _______ lenses. One is for shooting close-ups and one for shooting nature. (changeable)

Last winter, I lasted twenty minutes in ice cold water. It was such an amazing experience. I felt _______ after coming back to surface. (born)

I wish I was as _______ as she is. She doesn't have any problem speaking in front of the class and doesn't care what other people think of her. (confident)

We studied as hard as we could, but everyone of us failed. It looks like it requires a _______ effort to pass the final exam. (human)

The teacher asked me to _______ my essay because, supposedly, it contained a lot of grammar mistakes. (to do)

My mother is always so _______ when she comes home in the evening. She just lays in the bed and watches the TV. (to work)

Every woman deserves to receive a sufficient _______ care. However, it's still not a standard in many developing countries. (natal)

My uncle used to work for a _______ corporation. They paid him a lot but he wasn't very happy with the working conditions. (national)

Children of _______ couples are often targets for bullying in my country. Parents should do more to educate their children. (racial)

When it comes to playing chess, never _______ you opponents. They are always smarter than they seem to be. (estimate)