Question

fill in the blanks to complete each sentence with the appropriate word.
evolutionary biologists agree that humans are most closely related to the great apes—chimpanzees, orangutans, and gorillas.
nearly 98 percent of human dna matches chimpanzee dna; therefore, these apes are as closely related to humans as zebras are to horses.
we us

Explanation:

• For the first blank: "we" is a subject - pronoun. In the clause "that we humans are most closely related...", "we" is the subject of the verb "are".
• For the second blank: "us" is an object - pronoun. In the phrase "related to us humans", "us" is the object of the preposition "to".

Answer:

First blank: we; Second blank: us