Which verb agrees with its subject?

the poodle and the border collie two of the smartest breeds of dogs.

a.
was

b.
has been

c.
is

d.
are

What is a predic. how did the great railroad strike of 1877 demonstrate the power of workers? ate noun?

The truck driver backed his vehicle between two buildings, he did not have an inch to spare on either side. fragment, run on, or complete sentence?

You've arrived at the cafeteria! there is a trap door in the pantry which has been covered up by an atlas. choose the square which shows greenland to open the door.