Here are the correct answers for each question:

6. **A. the**
Complete sentence: "People often want to bring the happiness and luck for themselves and their families."

7. **A. freedom**
Complete sentence: "Technology has improved our lifestyles and has provided us with opportunities to enjoy more freedom."

8. **A. collects**
Complete sentence: "Our club members collect waste paper for the recycling program last week."

9. **C. at**
Complete sentence: "They are rarely at home at lunch time."

10. **D. as well as**
Complete sentence: "No one else in the class plays the guitar as well as Mark."