We would not give you any lower price ____ you could place an order for more than 500 tons.
A. expect
B. until
C. unless
D. besides
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____ we thank you for your enquiry, we regret being unable to make you an offer for the time being.
A. While
B. When
C. As
D. Since
Please mark the initials of our company on the ____.
A. inner packing
B. outer packing
C. products
D. boxes
Our strong packing will certainly help ____the sales of the product.
A. promotional
B. promotion
C. promote
D. promoting
We are fully aware ____ the trouble you are faced with.
A. of
B. in
C. at
D. /