Read the passage carefully, then choose the correct answers

The streets are crowded with traffic. Taxis are bringing tired people from the airport and the railroad stations to the hotels. They hope to sleep a few hours before their busy day in the big city. Trucks are bringing fresh fruit and vegetables into the city. Ships loaded with food and fuel are tied up at the dock. Toward morning the streets are quieter. But they are never deserted in the big city.

Soon it’s morning in the big city. By eight o’clock the streets are filled again with people. Millions of people live in the big city. And millions of people who work in the big city live in the suburbs. The commuters, are hurrying out of railroad stations, subways, buses and apartment houses. Hurry, hurry, hurry. Everyone is in a hurry. Some stop only to drink a quick cup of coffee. There’s no time for breakfast. Others stop to buy the morning paper. They read the headlines before they hurry on to the tall office buildings where they work.

The writer says that, in the big city, _______.

• A. 
  trucks are being unloaded.
• B. 
  the streets are always crowded.
• C. 
  the streets are deserted.
• D. 
  ships are being loaded with food and fuel.