－Is she a teacher or a nurse－__________. She has worked in the hospital for three years.

Look! The light in Mr. Brown’s office is still on. He be working there.—It be him. He has gone to America.

Most co-workers think him superior ________ the manager though he i.s an ordinary employee.[ ]

We should be more independent in order to meet the needs of our modern life.– ______

There are many tall trees on ______ side of the street.