20. It was a cold January day in York, Pennsylvania. Dr. James turned on the television to check on the weather. The weatherman said that it was going to stay cold for several days. According to him, the roads ___ very dangerous because of the snow and ice and he strongly recommended staying at home if at all possible. (BE)

Перевод задания: Заполните пропуск словом, образованным от BE, так, чтобы предложение было грамматически правильным.

The roads were very dangerous because of the snow and ice. — Дороги были очень опасными из-за снега и льда.

Подлежащее roads стоит во множественном числе, поэтому в Past Simple глагол BE имеет форму were.