25 Read and fill in.
What to do
Example
7
Choose a number (1-80).
Add (+) five.
12.
16
Add (+) four.
Take away (-) two.
14
Add (+) six.
20
Take away (-) the number​

ччч

Объяснение:

1. i knew this person2. he read the book3. you do this exercise

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.