1.Which sentence uses a verb that agrees with its subject?
The post offices in our area opens at 9 a.m.
Their behavior during the performances was very good.
A new book by Ruth Rendell, the author of many mysteries, arrive in bookstores soon.
The dresses on the rack in the back of the department was on sale.
2.Which best identifies a relative pronoun?
which
its
theirs
them
