1) Is the climate changing? Yes,it is
2) Are the tigers becoming extinct? yes,they are
3) Are you talking to Billy? No, I am not
4)Is that female bear protecting her baby? Yes, it is
5) Are we learning new vocabulary? Yes, we are
6) Are your friends running in the park now? No, they are not
7) Is Jack looking for his book? No, he isn't
