1. A. proofs /s/    B. books /s/    C. poins /s/    D. days /z/

2. A. asks /s/        B. breathes /z/    C. breaths /s/    D. hopes /s/

3. A. sees /z/        B. sports /s/         C. pools /z/        D. trains /z/

4. A. tombs /z/      B. lamps /s/           C. brakes /s/      D. invites /s/

5. A. books /s/       B. floors /z/        C. combs /z/           D. drums /z/

6. A. cats /s/           B. tapes /s/            C. rides /z/         D. cooks /s/

7. A. walks /s/        B. begins /z/        C. helps /s/         D. cuts /s/

8. A. shoots /s/     B. grounds /z/  C. concentrates /s/       D. forests /s/

9. A. helps /s/    B. laughs /s/      C. cooks /s/         D. finds /z/

10. A. hours /z/       B. fathers /z/     C. dreams /z/      D. thinks /s/

11. A. looks /s/     B. tests /s/            C. roofs /s/               D. noons /z/

12. A. pens /z/       B. boys /z/           C. dogs /z/            D. seats /s/

13. A. tests /s/          B. rulers /z/          C. months /iz/          D. books /s/

#nhungnguyen