We don't allow ______ （smoke)here.

A.allow

B.alter

C.alarm

A.to smoke

B.smoke

C.smoking

D.smoked

A、to smoke ... to smoke

B、to smoke...smoking

C、smoking ...smoking

D、smoking...to smoke

A.as if

B.even if

C.so long as

D.in case

A: Hello, Mr．Kubat．I am glad to meet you here at the fair.

B: Likewise．Take a seat, please．How about a cup of tea？

A: Sure．Thank you．It seems your business is prosperous．There are many customers here.

B: Yes, it's not too bad．Our sales are going up year after year．And we still have a large potential production capacity.

A: Well, what do you think of choosing a commission representative or agent abroad to promote your sales？

B: That's a good idea．So far, we have several agents abroad.

A: We are willing to be your agent in Thailand for hand-held tools．What do you think？

B: That sounds good.

A : Then , what's your usual commission rate for your agents？

B: Usually, we give a commission of 3% to our agents.

A: 3% is too low, I think．You see, we have a lot of work to do in sales promotion such as advertising on radio or TV, printing booklets, leaflets, catalogues and so on．It all costs money．3% is not enough.

B: Don't worry．We'll allow you a higher commission rate if your sales score a substantial increase.

A: You mean to say.--

B: Now, if you sell US ＄2 million worth of hand-held tools annually, we can only allow 3% commission．If the annual turnover exceeds US ＄5 million, you can get 5% commission．What do you think of that？

A: It sounds OK．Then how do you pay the commission？

B: We may deduct the commission from the invoice value directly or remit it to you after payment.

A: All right．If it's okay, we would like to sign an agency agreement with you immediately.

B : Think it over．We hope to keep a good business relationship with you.

A: Thank you for your help.

A.as if

B.even if

C.so long as

D.in case

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.

A、to use

B、us use

C、us using

D、us to use