Ответ:

  1. The Earl of Sandwich invented the sandwich.
  2. In Victorian England it was a tradition to have sandwiches at about 5 o’clock.
  3. The sandwiches are a typical “snack” meal because they are easy and quick to prepare.
  4. You can buy sandwiches in shops and restaurants.

Ответ: 1) the sandwich; 2) to have sandwiches at about 5 o’clock; 3) they are easy and quick to prepare; 4) shops and restaurants.