______,weareairmailingyouourlatestquotation-sheet.
WethankyouforyourletterofMay5th,____yourpurchasefromusof5000tonsGreenBeans.
Weshalldoeverythingpossibletoassistyouin______amutuallybeneficialtrade.
Inthelasttwentyyears,breakthroughsintechnologyhave_____advancedthewaywecommunicate,bringinguscomputers,cellphonesandtheInternet.