Краткое пояснение: Необходимо поставить глаголы в Past Perfect (прошедшее совершенное время). Past Perfect образуется с помощью had + V3 (глагол в третьей форме).
Решение:
- The Wizard said that there were four witches. Before that moment, Dorothy had heard (hear) about only one.
- The Scarecrow wanted brains because he had never thought (never / think) properly before.
- The Tin Man asked for a heart. He had not felt (not / feel) love for anyone in his life.
- The Lion said he was a coward. All his life he had been (be) afraid of everything.
- The friends ran from the room because the Head had turned (turn) into a ball of fire.
- Dorothy was sad. She had already traveled (already / travel) a long way, and now she had to kill a witch.
Ответ: had heard, had never thought, had not felt, had been, had turned, had already traveled