Exercise 1 Underline each pronoun. In the blank, write int. if the pronoun is interrogative, rel. if it is relative, dem. if it is demonstrative, and ind. if it is indefinite.
int.
Who can answer this question?
1. What is the longest river in the United States?
2. The Missouri, which flows 2,540 miles, is the longest river.
3. In fact, the Missouri is one of the longest rivers in the world.
4. How many of the world's rivers are longer than the Missouri?

1. What is the longest river in the United States? Interrogative pronoun.

2. The Missouri, which flows 2,540 miles, is the longest river. Demonstrative pronoun.

3. In fact, the Missouri is one of the longest rivers in the world. Indefinite pronoun.

4. How many of the world's rivers are longer than the Missouri? Indefinite pronoun.

Explanation:

Pronouns are the words that we use instead of a noun. There are different types of pronouns- be it demonstrative, relative, interrogative, or indefinite pronouns.

The given sentences and the type of pronouns they are, are given as below-

1. What is the longest river in the United States?

Interrogative pronoun.

2. The Missouri, which flows 2,540 miles, is the longest river.

Demonstrative pronoun.

3. In fact, the Missouri is one of the longest rivers in the world.

Indefinite pronoun.

4. How many of the world's rivers are longer than the Missouri?

Indefinite pronoun.

i believe the answer is d : )

basic principle: a pronoun usually refers to something earlier in the text (its antecedent) and must agree in number — singular/plural — with the thing to which it refers. the indefinite pronouns anyone, anybody, everyone, everybody, someone, somebody, no one, and nobody are always singular.