Вопрос по английскому языку:

Помогите! Срочно! Употребите нужную форму имени существительного (Агабекян, стр.47)
1. one tooth – two ____
а. toothes b. teethes c. tooths d. teeth
2. one lady – two ______
a. lady b. ladys c. ladyes d. ladies
3.one play – three ____
a. plays b. payes c. playes d. play
4. one fox – five ____
a. foxs b. foxis c. foxes d. fox
5. one plate – ten ______
a. platis b. plates c. plats d. plateses
6. one child – three ______
a. childs b. childes c. childrens d. children
Употребите нужную форму имени прилагательного (Агабекян, стр.77)
7. That bike is _______ than that car.
a. the cheaper b. cheapest c. cheaper d. cheap
8. This sofa is … than mine (comfortable).
a. a comfortable b. comfortabler c. more comfortable
9. Do you know that the Dead sea is ____ sea.
a. a salty b. a saltier c. the saltiest
10. This is ___ problem she has ever had.
a. а great b. a greater c. the greatest
11. They leave _____ way they can.
a. a quick b. a quicker c. the quickest
12. My suitcase is _____than yours.
a. heavest b. heavier c. heavyer
13. I think this is ____ place in the world.
а.more wonderful b. very wonderful c. the most wonderful d. most wonderful
14. What is _____ book in your library?
а. most interesting b. the most interesting c. interesting d. more interesting
15. The water in this river is _____ than in the lake.
а. clearer b. clearest c. more clear d. most clear