Complete with: beating, nightmare, sensed, trigger, sweating, shaking, teased, rational.

1. He was so scared he started **shaking**. 2. His heart was **beating** fast. 3. She was terrified, she was **shaking** like a leaf and crying. 4. The whole experience was a **nightmare**; we’ll never do it again. 5. She didn’t want to wear a dress in case her friends **teased** her. 6. The dog **sensed** danger and started barking. 7. It’s a **rational** fear to be afraid of snakes, as some of them are poisonous. 8. Bacteria on your mobile phone can **trigger** an allergic reaction and cause a rash.