12. A. in
"In" is used to indicate location within a specific area.
13. A. Take - in
"Take in" means to absorb or understand something.
14. B. How
"How" is used to ask about the degree or extent of something.
15. C. says
"Says" is used to report what someone has said.
16. A. library
A library is a place where books and other materials are kept for reading or borrowing.
17. A. polluted
"Polluted" means contaminated with harmful substances.
18. B. inconvenient
"Inconvenient" means causing difficulty or trouble.
19. B. friendly - helpful
"Friendly" and "helpful" are both adjectives that describe positive qualities of people.
20. A. outdoor
"Outdoor" refers to activities that take place outside.
21. A. on
"On" is used to indicate location at a specific point.
22. D. expensive
"Expensive" means costing a lot of money.
23. C. narrow
"Narrow" means not wide.