Ответ:

Перевод задания: Прочитайте текст и выберите правильное слово A, B или C для пропусков 1–5.

  1. C — to: warn somebody to do something.
  2. A — at: at the top.
  3. C — on: walk on a carpet.
  4. B — of: a sign of something.
  5. C — or: roses or chocolates.

Полный текст с вставками:

When traffic lights are red, they warn drivers and pedestrians to stop. The red light is always at the top of the lights. People roll out a red carpet for them to walk on. A red rose is a sign of romantic love. People often give each other red roses or red chocolates.

Ответ: 1 — C, 2 — A, 3 — C, 4 — B, 5 — C.