12.A firm offer ____ a time limit for acceptance.
A.may specify
B.never specifies
C.sometimes specifies
D.must specify
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13.If you can ____ your price by 5%, we may conclude the transaction with you.
A.offer
B.bring down
C.fix
D.quote
14.The commodities you offered are ____ line with the business scope of our clients.
A.outside
B.out
C.out of
D.without
15.We are offering you firm ____ on the same terms and conditions as the previous contract.
A.as following
B.as follow
C.as is following
D.as follows
1. We are very pleased to confirm ____ 1,000 tons of white cement.
A.ordering
B.having ordered
C.to order
D.order