Phần a:

1. sign up (v): đăng kí
2. arts and crafts (n.p): thủ công mỹ nghệ
3. drama club (n.p): câu lạc bộ kịch
4. outdoor activities (n.p): hoạt động ngoài trời
5. act (v): hành động
6. indoor activities (n.p): hoạt động trong nhà
Phần b:

2. Chris wants to be an actor. He's learning how to act at school.
3. Jane likes acting. She joined the drama club at school.
4. Some students love doing arts and crafts because they can make pretty things from paper.
5. Volleyball and table tennis are indoor activities. We often play them in the sports center.
6. Many students like playing soccer and tennis. They're outdoor activities.