问几个简单英语翻译问题，请大神帮帮忙，网上在线翻译就不用了...

1. I want to book a single-way business class ticket of Aug. 8 from Hangzhou to Sidney.
2. Full price business ticket seems the most suitable choice because it's more flexible.
3. Excuse me. Is here Customs? I will travel in Australia. Which handleformalities do I need?
4. I wonder how much cigarette and wine I can bring with free of duty if I travel in British.
5. I will go to attend Frankfurt Trade Fair next Monday. I heard that all the rooms of your hotel had been booked. So I wonder if there is cancellation? If yes, I hope to book a single-bed room.
= =这个如何

1. I want to book a single-way business class ticket of Aug. 8 from Hangzhou to Sidney.
2. Full price business ticket seems the most suitable choice because it's more flexible.
3. Excuse me. Is here Customs? I will travel in Australia. Which handleformalities do I need?
4. I wonder how much cigarette and wine I can bring with free of duty if I travel in British.
5. I will go to attend Frankfurt Trade Fair next Monday. I heard that all the rooms of your hotel had been booked. So I wonder if there is cancellation? If yes, I hope to book a single-bed room.

嗯 客气了