We use was or were before the subject to form questions in the

Мы используем was или were перед подлежащим, чтобы образовать вопросы в...

We use was or were before the subject to form questions in the past continuous.

Перевод: Мы используем was или were перед подлежащим, чтобы образовать вопросы в прошедшем продолженном времени.

Ответ: past continuous