There are many tall buildings on ____ sides of the street .
-----______ are the students talking ______? ----- A policeman.
It’s four o’clock in the afternoon. The boys __ in the pool.
My friend works ___ a hospital ___ a doctor.
He ______ his uniform every day. It’s _______ beautiful.
--- What do they do? ---_________. A. They are actors. B. They are Chinese. C. They like movies.