Перевод предложения "сто лет от тебя ничего не слышно"?

Ihave not heard about you for ages.

One hundred years on you can not hear anything

1.the boiling point will be determined after the experiment begins in half an hour.2.the substance was being dissolved in nitric acid when the professor came in.3.by the end of the next experiment the volume of liquid will have been measured in a graduated cylinder.4.the result of the reaction of sulphuric acid with potassium hasn't been obtained yet.5.many experiments were carried out by pharmaceutical students yesterday.6.by the end of our practice many medicinal plants will have been  collected at the botanical stations.9.pharmacy is defined as the science of recognizing, identifying, selecting, preparing and compounding substances.10. some preparations which were known to primitive men are known in a modified form.11. it is known that morphine was isolated from opium by 1906.12. he said that the room had been ventilated for two hours before the class began.№7 и 8 дублируют №5 и 6.

l. the book will be in the library

    the book won’t   be in the library

    will the book   be in the library?

  2. yesterday they were in the library

        yesterday they weren’t in the library

        were they   in the library yesterday?

  3. my friend is at the cinema.

      my friend isn’t at the cinema.

      is my friend at the cinema?

4. we are students

we aren’t students

are we   students?

5. he was with us

he wasn’t with us

was he was   us?

6. she will be in moscow next week.

she won’t be in moscow next week.

will   she   be in moscow next week?

7. i am strong.

  i am not   strong.

  am i strong.