1 (a) Mi abuelo es Inteligente (Tip most plural words have an s at the end of the word abuelos/grandparents since it doesn't have one. search for the answer with no s at the end)
2 (b) mis hermanos son morenos (Tip when talking about men they use an o at the end of the word: hermano/brother when in feminine is with an a Hermana/Sister)
3 (a) las Chicas estan contentas
4 (b) Mi mama es esponteanea.