问题：
[单选] ____ please find a catalogue for our electric mixers, together with _____ specifications.
Enclose, detailed 。 Enclosed, detailed。 Enclose, details 。 Enclosed, details。
问题：
[单选] W are sure that you will find a ready sale ____ this type of new product.
to 。 for 。 on 。 in。
问题：
[单选] W e will present the draft _______acceptance by your bank.
for 。 with 。 to 。 on。
问题：
[单选] Please send us as soon as possible samples of the following goods _____ listed in your current catalogue.
which 。 as 。 what 。 for which。
问题：
[单选] The offer is firm subject ____ before October 1.
for your reply reaches us 。 for your reply reaching us 。 to our receiving your reply 。 to your reply reaching us。
问题：
[单选] _____ we appreciate your counter-offer, we your prices too low to be acceptable.
Meanwhile 。 While 。 However 。 Whether。
问题：
[单选] In your letter of April 10, you did not mention ____ the price of arts & crafts.
to raise 。 having raised 。 rise 。 having risen。
问题：
[单选] Please note that Item no．789 can be certainly promised for immediate shipment ____ receipt of your order.
if 。 whether 。 upon 。 at。
问题：
[单选] Please inform us ____ the supply and demand situation in your country.
to 。 of 。 with 。 in。
问题：
[单选] We are enclosing a full set of copy documents ______this first consignment
referring 。 covering 。 regarding to 。 as for。
