Напишите следующие предложения в отрицательной и вопросительной форме: 1. he keeps three languages in his head. (what? ) 2. russian has very different endings. (what language? ) 3. it comes back after two or three days. (when? ) 4. he used the appropriate part of his brains. (what part? ) 5. i will keep it in this file. (where? ) 6. they have a well-developed skill inside them. (who? ) 7. the operator is establishing contact. (what? ) 8. foreigners were speaking at that moment. (when? ) 9. now i am studying this language on my own. (who? ) 10. she will be speaking french very fast at this time next year. (how? )