Please choose the correct ending to complete the given sentence: Relationships: [header] How to improve social skills [title] Be aware of the volume and tone of your voice. [step] Don't speak too softly or too loudly either. Speak at a volume that can be heard easily, and suggests confidence but never shows aggression.

Ending1: Additionally, when you're being asked for something, put a finger on the back of your neck, below your adam's apple. Your fingertips should be as close to your lungs as possible. Ending2: Don't say " awe " at the top of your lungs. Speak at the equivalent of the size of a bubble. Ending3: Speak in straightforward, precise language that doesn't frustrate other people. Practice speaking loud and clearly when you're talking with your family and friends. Ending4: [substeps] Remember to adjust the volume of your voice to suit the surrounding environment. If possible, speak at the same volume and tone as people in your immediate environment.

Answer format: ending1/ending2/ending3/ending4