在每小题列出的四个备选项中只有一个是符合题目要求的 , 请将其代码填写在答题纸相应的位置上。错选、多选或未选均无分。

1. We __________ your quoting us your competitive prices on a CIF basis for the following.

A. appreciate                                                   B. are appreciated

C. appreciate it                                                D. will be appreciated

2. Under the __________, it is impossible to decline our price again.

A. circumstance                                              B. circumstances  

C. case                                                           D. cases

3. Please see to __________ that goods should be delivered in 3 equal lots.

A. us                                                              B. it       

C. the L/C                                                       D. them

4. We regret having to remind you that 20% of the freight is still __________.

A. owned                                                        B. owning