Fill in the blanks with the information you hear from the video：The seller’s suggestion:1. Since this is our first order in this field, we would like a 、2. How about?3.I’ll accept your last proposal, but my company requires the final 75% payment to be paid within of the final delivery.The buyer’s suggestion:4. I wonder if you can accept .5. Maybe we can make a(n) to show your sincerity.6.In that case, we’d pay in advance and pay 75% on .