Прошлым летом семьи энн и дэна устраивали в саду пикники

last summer, anne and dan's families picnicked in the garden.

1. am packing

2. does pack

3. don't save up

4. are, saving up

5. am meeting

6. meet

7. are looking 

8. lost, looked

9. are, doing, am waiting

10. cries, waits 

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.