Which sentence uses a verb that agrees with its subject?

a.
how was they behaving during the long bus ride?

b.
is these books new?

c.
has the robinsons arrived yet?

d.
at the end of the driveway sits their pickup truck.

answer: the mildest forms of push polling are designed merely to remind voters of a particular issue. for instance, a push poll might ask respondents to rank candidates based on their support of an issue in order to get voters thinking about that issue. many push polls are negative attacks on other candidates.

the answer is a because there all in high school