Давайте раскроем скобки, употребляя глаголы в соответствующих временах: Simple, Present Continuous или Future Simple. Я объясню, как я выбирал нужные формы.
- It is cold in autumn. It often rains. A cold wind often blows.
- The weather is fine today. It is warm, the sun is shining brightly. A soft wind is blowing. Small white clouds are sailing in the sky.
- Don't go out: it is raining heavily.
- Take your raincoat with you. I am afraid it will rain in the evening and you will get wet through if you do not put it on.
- Every spring birds come to our garden and sing in the trees.
- Listen! Somebody is singing in the next room.
- It usually does not snow at this time of the year.
- What is the weather like now? Is it snowing? No, it is not.
- Are we going out of town to ski on Sunday? Yes, we are if it snows this week and if there is a lot of snow everywhere.
- What are you doing tomorrow? We are going out of town if the weather does not change for the worse. Will you come with us? - With pleasure, if only I do not have too much work to do at home.
- If we have televisions at our supermarket, they will inform customers about things in the store.
- If we play music, it produces the right atmosphere.
- If we put in cameras, they will stop people stealing things.
- If we employ more assistants, they will help our customers.
Объяснение выбора форм:
- Simple Present используется для выражения общих истин и регулярных действий (например, "It is cold in autumn").
- Present Continuous употребляется для описания действий, происходящих в данный момент (например, "The sun is shining").
- Future Simple используется для выражения действий, которые произойдут в будущем (например, "It will rain in the evening").
Таким образом, в зависимости от контекста, я выбрал соответствующие времена для каждого глагола.