Ответь

Краткий ответ

3. Be quiet. The baby is sleeping.
4. He always bites his nails.
5. Water doesn’t boil at 80°C.
6. The bus leaves at 6:30 pm.
7. Is he doing his homework now?
8. What time do you start work?
9. He isn’t watching TV now.
10. She doesn’t like flying by plane.
11. Are they leaving next week?
12. I don’t think he’s in.

Как выбрать время

• Present Continuous — действие происходит сейчас или это договорённый план:
  is sleeping, is doing, isn’t watching, are leaving.
• Present Simple — привычки, факты, расписания и глаголы состояния:
  always bites, doesn’t boil, leaves, do you start, doesn’t like, don’t think.

Важно:

• В Present Simple после he/she/it добавляется -s:
  bite → bites, leave → leaves.
• В отрицаниях: doesn’t + начальная форма глагола:
  doesn’t boil, а не doesn’t boils.
• Вопросы в Present Continuous строятся с am/is/are, а в Present Simple — с do/does.