Choose the word or phrase with the CLOSEST in meaning as the underlined part.

Question 13. A carbon footprint is the total amount of C02 produced by human activities and includes the emissions of other greenhouse gases.

A. expansion

B. discharges

C. reductions

D. controls

Choose the best answer to complete each sentence

Question 14. It's necessary for her _______back home before 10 p.m.

A. came

B. coming

C. to come

D. come

Question 15. Their favourite music is K-pop and British or American pop music as they are big ______

of Korean and American music.

 A.competitors   B. fans    C. participants           D. singers

Question 16. Nam is very humorous. His joke makes me _______a lot.

 A.laughed    B. to laugh    C. laugh        D. laughing

Question 17. My brother and I take responsibility ______ doing the laundry while my mother cooks and my father does the gardening.

 A.into    B. at    C. to        D. for

Question 18. Don’t bother me now. I ______ an important letter.

 A.write    B. is writing    C. writes        D. am writing

Question 19. My teacher assigned us a writing task about ____ of our favorite singers.

  A.biochemist      B. biodiversity      C. biography          D. biology