Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to be a grammar nazi [title] Make sure you don't split infinitives. [step] Familiarize yourself with the uninflected form of verbs. Examples include: to cry, to run, to hide.

Ending1: Keep these two words together when using them. Do not place an adverb or adverbial phrase in between them. Ending2: Do not borrow to practice at school, don't drive, etc. Make sure you have them memorized so they're easy to remember. Ending3: To read, to ask, and to act. [title] Be aware that your grammar should change dramatically each hour. Ending4: You don't need excessive vocabulary to be a grammar nazi. Don't complete a sentence in half.

Answer format: ending1/ending2/ending3/ending4