Read the passage carefully and choose a suitale word to fill each blank

Camping holidays are always (1) ______ with students and young people-they are a cheap and (2) ______ way to see a country. People often travel by train, by coach or (3) ______ foot, so one thing is important (4) ______ before starting: you can only take with you what you can carry – usually in a backpack on your back.

If you travel with a friend, of course some items can be shared – a tent, a gas stove, food. Other things must (5) ______ by each person – clothes, footwear, a sleeping bag.

(1) ______

• A. 
  popular
• B. 
  popularity
• C. 
  populate
• D. 
  popularly