Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to get better at tennis [title] Focus on accuracy, not speed, when serving the ball. [step] Beginner tennis players often serve the ball using all of their speed and strength. You don't need to hit the ball with all your might, though! Don't put 100% of your energy into a serve.

Ending1: You want to stay down, you want to move yourself forward, and you want the ball to flick away. Focus on hitting the ball with all of your power and accuracy. Ending2: A killer serve is whole palm hitting the ball. You need to perform your best! No slow up. Ending3: Professional players tend to give about 80% energy. When you serve, focus more on accuracy than power. Ending4: Your speed and strength are a big part of everything and as a beginner you may find yourself hitting the ball quite late in the game. [substeps] You're probably not trying to be perfect or to play favorites, but consistency is key to respecting the rules.

Answer format: ending1/ending2/ending3/ending4