1. Put the verbs in brackets into the correct tense (Present Simple, Present Continuous, Past Continuous, Future Simple, or be going to).

Решение:

1. Look at the clouds! It is going to rain soon. (Прогноз, основанный на наблюдении)
2. While I was doing my homework, my brother was watching TV. (Два действия, происходившие одновременно в прошлом)
3. They visited Paris last summer. (Конкретное действие в прошлом)
4. My parents are going to buy a new car next month. (Намерение, запланированное на будущее)
5. Water boils at 100 °C. (Общеизвестный факт)
6. I have never been to London. (Опыт, который произошел в прошлом, но не имеет определенного времени)
7. Be quiet! The baby is sleeping. (Действие, происходящее в данный момент)
8. What were you doing yesterday at 5 p.m.? (Действие, которое длилось в определенный момент в прошлом)
9. I think he will pass the exam. He studied hard. (Предположение о будущем, основанное на текущей ситуации)

Ответ: is going to rain; was doing, was watching; visited; are going to buy; boils; have never been; is sleeping; were you doing; will pass.