What is goodbye in spanish? and are there different types of googbyes?

Can you me with this spanish worksheet

My spanish teacher said to make these sentences into "ar" verb conjugations. can someone plz me with that? 1. ellos están en la computadora 2. la chicas están estudia 3. la chicas están hablamos 4. el ojo de el señor es marrón 5. la muchacha es feliz 6. la muchacha cantar

Write the indefinite article ( un, una, unos, unas ) for each word. if both masculine and feminine articles are possible, write both. 1. autobús 2. foto (fotografía) 3. turistas 4. números