Объяснение:

1. neg: my mom doesn't cook pizza on Saturday night

int: Does my mom cook pizza on Saturday night?

2. neg: We aren't studying for an exam these days

int: Are we studying for an exam these days?

3. neg: I don't get up at eleven o'clock at the weekend

int: Do I get up at eleven o'clock at the weekend?

4. neg: She isn’t having a shower right now

int: Is she having a shower right now?