Here are the suggested answers for the blanks:

### I. Fill in the Blanks:

7. The **B. costumes** of the actresses on the stage were colorful and eye-catching.
8. Teenagers **A. should** go to bed early. It's good for them.
9. John's eaten a lot of food but he's still **C. hungry**.
10. **B. In spite of** his lack of sleep, he cannot work well.

### II. Supply the correct forms of the given words:

1. John practices English with his brother **at night**. (NIGHT)
2. Do you know what this flower **symbolizes**? (SYMBOL)
3. The children are playing **noisily** in the garden now. (NOISE)
4. Sports help **educate** children on different moral values. (EDUCATION)
5. Jack has a very impressive coin **collection** which he proudly shows to his classmates. (COLLECT)