Here are the appropriate answers for each question based on the context provided:

**Question 1:** The council aims to **cut down on** litter in the town center by increasing the garbage collection fee.
**Answer:** B. reduce
*Explanation:* "Cut down on" means to reduce.

---

**Question 2:** The community center **runs out of** space on weekends, so we have to book a room in advance for our club's meetings.
**Answer:** A. has enough
*Explanation:* "Runs out of" means to not have enough.

---

**Question 3:** On Fridays, I like to **go out** with friends to the local park for a picnic.
**Answer:** B. hang out
*Explanation:* "Go out" in this context is synonymous with "hang out."

---

**Question 4:** My friend's family **comes back** to our town every summer to visit their grandparents.
**Answer:** B. returns
*Explanation:* "Comes back" indicates returning to a place.

---

**Question 5:** The school **takes care of** the town's children by providing free breakfasts.
**Answer:** C. cares
*Explanation:* "Takes care of" means to care for someone.

---

**Question 6:** They moved to a quiet **suburb** outside the city to enjoy a peaceful life.
**Answer:** D. neighborhood
*Explanation:* A "suburb" is typically a residential area near a city, which can be considered a type of neighborhood.

---

Please let me know if you have any further questions!