13. a. exchange
We can exchange addresses when we see each other.
14. c. impossible
It was impossible to sleep because of the noise.
15. c. die
Few people can die without water for more than a week.
16. b. available
The Holy Quran is available in more than 100 languages.
17. a. choose
Pay attention to what he’s saying because he won’t choose it a second time.
18. c. meet
Many languages can meet the needs of their own speakers.
19. a. surprising
I have to say that it’s surprising to find you agreeing with me for once.
20. c. activities
I have children in my class of very mixed activities.
21. b. range
Dress sizes range from small to extra large.
22. c. percent
About fifty percent of the world’s languages have fewer than 5000 speakers.
23. b. matter
He never answers emails, no matter how many you send him.
24. b. mental
Stress can affect both your physical and mental health.
25. c. absolutely
It’s absolutely impossible to work with all this noise.