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 didn't ask a porter to help him. did he ask a porter to help him? 2) He won't be at the airport two hours before departure. will he be at the airport two hours before departure? 3) We didn't register our luggage. did we register our luggage?