I.
1. B 2. A 3. C 4. A 5. D 6. B
7. A 8. C 9. D 10. B 11. C 12. A
13. B 14. D 15. C
II.
/s/: elephants, helps, works, lamps, plants, toilets, parents, ships, chopsticks, clothes, tablecloths, plants, laptops, giraffes, lights, shelves, desks, clocks, maths, books, tourists, prevents, watches.
/z/: chairs, photos, rooms, studies, bears, pandas, televisions, cookers, walls, wardrobes, posters, apples, beds, givers, rooms, tables, pictures, buildings, learns, consumes, lions, balls, houses, apartments, baths, succeeds, trains, dogs, windows, attics, houses, villas.
/iz/: fridges, villages, matches, coughs, flourishes, changes, places, boxes, kisses, roses, fridges, vases, sandwiches, classes, washes, dishes.
