2 Fill in -ing or -ed.

1 We are going in a helicopter! How exciting! 2 David is so smart, he is never bored with books. 3 The boy was very confused when the teacher saw him cheating. 4 Alice's guests were amused by the clown at her birthday party. 5 The girl cried out because the spider looked really scared. 6 Sam was worrying about his younger brother. Объяснение: Здесь нужно выбрать, какую форму глагола использовать: с окончанием '-ing' или '-ed'. '-ed' обычно используется для описания чувств, а '-ing' - для описания того, что вызывает эти чувства.