问题描述：
外贸函电 一． Choose the best answer.1.We look forward _ your orders.A.t
3.We have pleasure in enclosing a copy of our latest catalogue for in your letter dated December 15.
A.ask B.asks C.aksed D.asking
3.We have pleasure in enclosing a copy of our latest catalogue for in your letter dated December 15.
A.ask B.asks C.aksed D.asking
问题解答：
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