8. Nuestros
9. Sus
10. Mis
11. Nuestras
12. Mis
13. Sus
14. Sus
Explanation:
In order to feel the blanks, we must learn the form and use of Spanish possessives. Here's how you do it.
8. Our cousins are Canadian.
As it is already indicated which possessive to use, what we should look for is the right gender and number. There are four possessives meaning our: nuestro, nuestra, nuestros, nuestras. In this example we need a masculine plural form, so the only correct choice is nuestros.
9. These are their pencils.
In Spanish the word pencil is masculine and in this sentence it is in its plural form. As you know, Spanish possessives take the gender and the number of the noun they refer to. This means that here we would need a masculine plural form, which is not difficult, as the third person possessive only has one form for both genders: su, sus. Therefore, we choose sus.
10. My friends are English.
The noun amiga is feminine and therefore demands a feminine possessive. The Spanish word for my is mi, mis, regardless of the gender of the noun. We should, however, match the noun and the possessive in number, which is plural in this sentence: amigas. Thus we choose the form mis.
11. These are our feathers.
In this sentence we should match the correct form of the word pluma meaning a feather. Pluma ends in -a, which makes it a feminine noun. The possessive should match the noun in gender so we choose the form nuestra, nuestras. We need to match the numbers, too, so plumas being in its plural form, we prefer nuestras.
12. These are my papers.
The word papeles is the plural form of papel, meaning paper. This is a masculine noun and demands a masculine plural possessive. As there are only two forms for my in Spanish, mi and mis, both of which do not depend on the gender of the noun, illustrating only a difference in number, we choose the only correct option mis.
13. Their grandchildren are Japanese.
Nietos is a masculine noun nieto meaning grandson or grandchild and it is in its plural form. There are two forms of the possessive their: su, sus. As we can notice, its forms is similar to the third person singular forms. What we also remember is that these forms do not differ in genders. The noun and the possessive must mach in number so we opt for nuestros.
14. These are his notebooks.
El cuaderno is a Spanish word for a notebook. It is originally a masculine gender noun and demands a masculine possessive. In the sentence in question it's in its plural form so we must match the noun number with the possessive number. Su and sus are the only forms for both genders, differing only in number, so we agree to use the form sus.
