Употребите предложения в вопросительной и отрицательной форме

1. physics is a study of non-living things

2. the science deals with changes in composition

3. these dictionaaries are very useful

4. he can spell all these words

5. this was the teacher's last question

6. she knows the answer to this question

7. the lesson is over

8. the teacher speaks english to the students

9. tom answered the teacher's question correctly

10. alice spoke loubly

1) Is physics a study of non-living things?

Physics isn't a study of non-living thing

2) Does the science deal with changes in composition?

The science doesn't deal with changes in composition

3) Are these dictionaries very useful?

These aren't dictionaries very useful

4) Can he spell all these words?

He can't spell all these words

5) Was this the teacher's last question?

This wasn't the teacher's last question

6) Does she know the answer to this question?

She doesn't know the answer to this question

7) Is the lesson over?

The lesson isn't over

8) Does the teacher speak English to the students?

The teacher doesn't speak English to the students

9) Did Tom answer the teacher's questions correctly?

Tom didn't answer the teacher's questions correctly

10) Did Alice speak loudly?

Alice didn't speak loudly