We ___ the time to play chess.A、don’t haveB、not haveC、no haveD、does have

A: Very well, we have settled everything about this transaction, except the terms of payment.

B: As you know, we prefer the L/C 20 days in advance which expires 15 days after receiving the paking list.

A: I suppose you have known our financial standing and credit well now after our long-term cooperation．We know an irrevocable L/C can ensure that the seller gets payment duly．But, on the other hand, it would increase the buying cost．Therefore, could you consider giving us D/P this time？

B: I am sorry．But our rules only allow us to accept other terms of payment by L/C, although the buyer has had two or three transactions with us before.

A: But why not if you have known the buyer's credit after several deals？

B: We hope you can understand．We have got some serious lessons from the credulity．One of them was through D/P documentary collection．When the shipment worth US ＄50000 was effected, the buyer refused to make the payment．But we can do nothing with it．And that buyer had had one or two deals before this one.

A: I see．But the flexible terms of payment will definitely bring you more orders as well as facilitate the buyers' purchasing.

B: Sure．We don't mean we won't accept other terms of payment forever．As a matter of fact, we will do so when we have known well about the buyer's credit after a real long-term cooperation.

It's time that we ______ (go)to the airport．

A. have

B. to have

C.had

By the time we get to their house, they _______ (finish) supper.

As () machine tools, we regret to () that we are not able to supply for the time being.

A、regarded,say

B、regards,saying

C、regards,say

D、regarded,inform

A.If time will permit

B.Time permitting

C.If time permitted

D.Time permits

A.will sit

B.will be sitting

C.is sitting

D.sit

A.as

B.though

C.unless

D.even if