Fill in the blanks with "necessary" or "sufficient" to make the following statements true. After the blanks have been filled in, express the result in terms of conditional statements.

1. Being a tiger is a ____________ condition for being an animal.

2. Being an animal is a ____________ condition for being a tiger.

3. Drinking a glass of water is a ____________ condition for quenching one's thirst.

4. Having a racket is a ____________ condition for playing tennis.

5. Heating water is a ____________ condition for brewing coffee.

6. Stepping on a cat's tail is a ____________ condition for making the cat yowl.

7. Burning leaves is a ____________ condition for producing smoke.

8. Paying attention is a ____________ condition for understanding a lecture.

9. Being exactly divisible by 4 is a ____________ condition for a number being even.

10. Intending to deceive someone is a ____________ condition for telling a lie.