In English, when a question begins with a verb, the answer is usually “yes” or “no”.
For example: Are you married? Does he like Spanish food? Can they speak German? Will it rain tomorrow?
English people will normally give a short answer by using the same subject and the same verb used at the beginning of the question. If the answer is “no”, the verb will be negative.
Are you a teacher? Yes, I am.
Does he like Italian food? No, he doesn’t.
Can they speak German? Yes, they can.
Will it rain tomorrow? No, it won’t.
Remember that simply answering “yes” or “no” to these questions sounds dry and rather unfriendly. So, why not try to use short answers.