For each of the following sentences, choose the form of the verb that agrees with the compound subject.
For help with this exercise, see chapter 24 of Real Essays 5e.
Example
The orangutan, the gorilla, the chimpanzee, and the bonobo (is, are) the four species of great apes.
| A. |
| B. |
Although obviously the chimpanzee and the gorilla (looks, look) more alike, chimpanzees are in fact genetically more similar to humans than to gorillas.
| A. |
| B. |
In fact, the chimpanzee and the bonobo (shares, share) about 98 percent of the genetic material, or DNA, found in humans.
| A. |
| B. |
Chimpanzees and humans (is, are) the only two species that deliberately seek out and kill members of their own species.
| A. |
| B. |
Murder, rape, torture, gang warfare, and territorial raiding (occurs, occur) frequently among chimpanzees.
| A. |
| B. |
The chimpanzee and the bonobo (is, are) even more closely related to one another than chimps and humans are, yet the bonobo is one of the most peaceful mammal species.
| A. |
| B. |
Male and female bonobos (has, have) equal power because the females form alliances that prevent the males from taking control.
| A. |
| B. |
If a mother bonobo or her baby (is, are) attacked by a male bonobo, the mother’s female allies will chase off the male aggressor.
| A. |
| B. |
The status or power of a male bonobo usually (depends, depend) on his mother’s rank within the group.
| A. |
| B. |
Today, many scientists disagree over whether the chimpanzee or the bonobo (is, are) more human in its behavior.
| A. |
| B. |