Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to choose music for studying [title] Choose music without lyrics for studying. [step] While you might usually prefer to listen to songs with lyrics, it's best to go with lyric-free songs when you're studying. Lyrics can be distracting, especially when you know them and can sing along.

Ending1: However, when you know lyrics, they make it easier to study. [substeps] Some music materials are harder to find than other materials (such as cds, cd cases, and notebooks), so it's best to buy the cheapest material that is available. Ending2: Instead, pick songs that have meaningful lyrics that will inspire you to study. The songs to pick : [substeps] I love animals more than anything in my life, like cats. Ending3: [substeps] Songs with lyrics that you like will come out better because the songs will eventually become audible. If you decide to sing songs without lyrics, dance around to different songs to exercise your vocal chords. Ending4: By listening to songs that are lyric-free, you can focus more on your studies and less on the music. [substeps] If you have a song that you really like to study to that has lyrics, try looking up the instrumental version of it.

Answer format: ending1/ending2/ending3/ending4