Answer:
Escribir means "To Write" In english
Answer:
ellas responden would be the correct conjugation.
To make a word in Spanish plural, it's quite similar to English where you will add s, es, etc to the end to indicate there are multiple of something.
10 words for examples as requested: plumas, libros, camisetas, escritorios, lápices (plural of lápiz), manos, pollos, sombreros, camisas, pantallas.
If you want to say the (word), add el/la depending on the word's gender.
