5. We expect your order, which will have our immediate attention.
我們期待貴公司的訂單，并會第一時間給予關注。
還能這樣說：
We hope you will favor us with your order, which shall have our best attention to give you a complete satisfaction.
We hope to receive your order with our great attention.
應用解析：
be in/out of sb.'s favor 得到（失去）某人的尊重、贊同等

6. We can deliver the goods within three days after receiving your order.
我們收到您的訂單后，3天內就能發貨。
還能這樣說：
We can deliver the goods in three days after receiving your order.
We can send the goods to you in three days as soon as we receive your order.
應用解析：
deliver over/up to 把……移交出去，把……轉交給

7. I'm more interested in being able to deliver goods on time or not.
我更感興趣的是能否按時交貨。
還能這樣說：
I pay more attention on whether the goods can be delivered on time or not.
I am more concerned about being able to deliver goods at the appointed time.
應用解析：
able 能干（指人具備做事情所需要的才能或卓越的才干）；
capable 勝任（指人或物具有能滿足普通要求的能力）；
competent 稱職（指具有做好某種工作或職務的能力）

8. I think we can strike a bargain with you if your price is competitive.
我認為如果價格有競爭力，我們就可以達成交易。
還能這樣說：
We can get the transaction concluded with you in that the price is competitive.
We can transact with you if you can provide competitive price.
諺語：
A bargain is a bargain.
買賣一言為定，達成的協議不可撕毀。