9. The _____ tree in our garden loses more leaves every autumn. A. ageing B. severe C. sensitive D. nourish

5. If your health condition is getting worse, you can _____ your doctor. A. consult B. consultation C. consultable D. consultative

13. What is the word that means the period between childhood and adulthood? A. pore B. dental floss C. toothpaste D. adolescence

10. It’s _____ to swim alone in the river, so we should always go with others. A. convincing B. exposing C. risky D. suitable

3. The _____ cat stole the fish from the kitchen when no one was looking. A. heartwarming B. entire C. sneaky D. mysterious

6. The artist stayed and danced on the stage _____ until the last minutes. A. grace B. graceful C. gracefully D. gracing

4. We found a locked box in the room, and it made us curious about the _____ inside. A. staff B. intelligence C. tank D. mystery

2. _____ loss and lack of food are the two problems that the endangered animals are facing. A. Wetland B. Habitat C. Creature D. Individual

7. The thick coat acts as a _____ layer against the cold wind. A. protect B. protection C. protective D. protectively

1. Most animals cannot survive in the _____ due to the lack of water and vegetation. A. ocean B. grassland C. fresh waters D. desert

12. What is the word that means something strange or unknown that has not yet been explained or understood? A. mystery B. jungle C. desert D. documentary