I'd like to make a reservation

我想预订。

I think you probably know China has adopted a flexible policy in her foreign trade.

我想你也许已经了解到中国在对外贸易中采取了灵活的政策。

Would you care to answer my question on the warranty?

你可以回答我有关保证的问题吗？

I will be here all night.

我整晚都在这里。

Have you marketed your product yet?

你们的产品尚未推出市场吗？

I don't have the figures, but I'll find out.

我没有这个数据，但我会找到的。