Correct the mistake in each sentence. use 1 I didn't used to go camping as a child.

Решение:

В отрицательных предложениях с "used to" используется вспомогательный глагол "did" и инфинитив "use", а не "used to".

Правильное предложение: I didn't use to go camping as a child.

Ответ: I didn't use to go camping as a child.