Here are the suggested completions for the sentences:

**VII. Complete the sentences, using the comparative form of the adverbs from the correspondent adjectives in the brackets:**

1. A baby can sleep **more healthily** than an adult.
2. People in the country eat **more generously** than people in the city.
3. Our grandparents got dressed **more quickly** than we do nowadays.
4. Nick speaks English **better** than her family members.
5. That old lady donates **more generously** than I do.
6. City people seem to apply modern techniques **more optimistically** than the people in the country.
7. The scientist talked **more traditionally** about the future of young people in the country that local people.
8. The paddy fields in my village were **more badly** affected by the floods than the next village.

**IX. Complete the sentences with suitable forms of the adverbs given in the brackets:**

1. Nick is a careful writer than Phuc. (carefully)
2. A snail is slower than a crab. (slowly)
3. A snail moves **more slowly** than a crab.
4. My father's explanation about the subject was clearer than my brother's. (clearly)
5. My father explains the subject **more clearly** than my brother.
6. My cousin is a better singer than I am. (well)
7. My cousin sings **better** than I do.
8. Phong is a faster swimmer than Phuc. (fast)
9. Phong swims **faster** than Phuc.

**X. Fill in each blank in the appropriate form of the word in brackets.**

1. Phong swims **faster** than Phuc. (fast)

Feel free to ask if you need any further assistance or clarification!