Question

Заполните пропуск. While we ... for the train, it started to rain.

Answer 1

Правильный : are waiting

Answer 2

While we were waiting for the train, it started to rain.

While we were waiting for the train, the weather suddenly changed and it started to rain. This unexpected rain shower caught us off guard. We had to find shelter or take out our umbrellas to protect ourselves from getting wet.