Please choose the best answer for each sentence.As the goods have been ready 1_____ shipment _____some time, please let us know definitely when the covering L/C will be established.There is no direct sailing2_____ here_____ your port this month.Owing3_____ the late arrival_____ the vessel, we find it impossible to effect shipment in 3 days.We would appreciate it if you would extend the shipment date and validity4_____ the L/C _____ July 10 and 25 respectively.We wish to draw your attention5_____ the validity of the L/C，the expiry date of your L/C falls_____ August 10.