Поставьте следующие предложения в отрицательную и вопросительную формы 1.He asked a porter to help him 2.He will be at the airport two ours before departure.
3.We registered our luggage.

1. He didnt ask a porter to help him.
Did he ask a porter to help him
2. He wont be at the airport two hours before departure.
Will he be at the airport...
3. We didnt register our luggage
Did we register...