1. C
2. B
3. A
4. C
5. C
6. A
7. C
8. B или С, не уверенна
9. B
10. B
11. B
12. A
13. C
14. A
15. B
1) finished
2) had returned
3) entered, had already opened
4) saw, hadn't washed
5) understood, hadn't done
Countable nouns: mystery - mysteries, knock - knocks, hoof - hooves,
mosquito - mosquitoes, carrot - carrots, candle- candles, idiom - idioms, tomato - tomatoes, vocabulary - vocabularies, play - plays, coin - coins, potato - potatoes, <span>mother tongues</span>.
Uncountables: bread, murmur, information, weather, toast, housework , practice, advice, money, butter, hair, paper.
Хах я даже знаю первый оратор прав))
Ответ Б .В следущий раз учи правило.