Краткое пояснение: Используем Present Perfect Continuous, чтобы показать действие, которое началось в прошлом и продолжается до сих пор.
- The baby has been crying for 20 minutes.
- It has been snowing since last night.
- The children have been studying for an hour.
Ответ: 1. The baby has been crying for 20 minutes. 2. It has been snowing since last night. 3. The children have been studying for an hour.