Resposta:

1. The baby cries every night

Negative: the baby doesn't cry every night

Interrogative: Does the baby cry every night?

2. My teacher writes fast

Negative: My teacher doesn't write fast

Interrogative: Does my teacher write fast?

3. I never read

Negative: ja está na negativa por causa do NEVER (nunca), mas sem o never ficaria: I don't read

Interrogative: Do I never read?

4. My friends eat a lot

Negative: My friends don't eat a lot

Interrogative: Do my friends eat a lot?