Read and correct was you at home yesterday

we are reading a sci-fi story about aliens these days.

1. who is reading a sci-fi story?

2. are we reading a sci-fi story?

3. what are we reading?

4. when are we reading a sci-fi story?

5. what story are we reading?

6. what is the story about?

7. is the story about aliens or about animals?

8. we are reading a sci-fi story about aliens, aren't we?

1. i exercise regularly in summer but more to do in winter. 2. she usually walks slowly but now she is walking even   faster . 3. nina speaks loudly but mary speaks even   louder . 4. he runs fast, than other boys. 5. i don’t sleep enough, less   than 8 hours. 6. he behaves badly, than other boys. 7. i smile often, more than my sister. 8. peter lives far from school, but ann lives closer .

я думаю, что  4 и в 6 предложениях ничего изменять не надо. может я ошибаюсь.