Помогите с предлогами

[newmarine]

- Can you give us a discount ... a large order? (в данном случае on или for? или можно и так, и так?)
- As we have done a lot business ... you we can give ... you a small discount. ... that case we'd like to have a discount (of) 7%.

И как правильно будет звучать перевод ответа, и какие предлоги нужны?

[sledopyt]

ньюмарина, у вас, кажется, с предлогами раньше проблемов не было. What`s going on?

- Can you give us a discount ON a large order?

- As we have done a lot OF business WITH you we can give you a small discount. IN that case we'd like to have a discount (of) 7%.

[123:]

+ - Can you give us a discount for a large order?

[lisulya]

discount ON + 1

[newmarine]

sledopyt, сама в шоке ))))

Всем спасибо )))