1. B
2. D
3.B
4.D
5.C
6.A?
7.A
2. Teresa ( deber estudiar ) DEBE ESTUDIA
3. Yo ( assistir a clases) ASISTO A CLASES
4. Esteban (escribir cartas). ESCRIBE CARTAS
5. Tú ( leer libros). LEES UN LIBRO
6. Nancy ( vender libros). VENDE LIBROS
I can help you with the first part, I don’t understand the second part, hope this can helps you
1. Masaje
2. Drogadictos
3. Bienestar
4. Mantenerme en forma
5. Teleadictos
According to articles, it was bc environmental degradation, shifting trade routes, overpopulation, extended drought and warfare. Hope this helps!