填空题

Letter one
May 1, 2002
Dear Sirs,
Your delay in delivering the carpets ordered on the 1st July is causing us considerable inconvenience, and it threatens the loss of one of our best customers, for whom they are intended.
We are likely to receive a standing contract from this order, but a delay in delivery might well prove fatal(致命的)to our chances. It is not enough, therefore, for you to inform us of the approximate date when delivery could be done: we must insist on an unconditional guarantee that the goods will be delivered by the 13th July. Further, it is important that you lose no time in conveying this information to us.
Sincerely yours,
John Browning
Letter Two
May 3, 2002
Dear Sire,
It is with regret and a certain amount of surprise that we find you have not yet delivered the goods ordered two months ago.
As your representative’s promise to effect prompt delivery was an important factor in our placing this order with you, we must insist you stand by statement.
The goods are required for shipment and must be with us in four days: should you fail in your obligations we will be compelled to cancel the order.
Sincerely yours,
John Browning

What will the buyers do if the sellers fail in their obligation
They will have to ()

【参考答案】

cancel the order