It is son because it is the plural third person form of ser, which expresses origin.
New project is a countable noun
Answer:
16)
1. Manana es martes
2. Manana es jueves
3. Manana es sabado
4. Manana es lunes
5.Manana es lunes
6. Manana es viernes
7. Manana es domingo
17)
1. miercoles 10
2. domingo 7
3. lunes 8
4. viernes 5
5. miercoles 3
6. jueves 4
7. sabado 8
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Explanation:
A ronco obviamente porque te poner ronco de la voz