发票;发货单n.i_______________
Iwasgreatlyshockedbytheway__________thingsweredonethere.
繁荣n.p_______________
Theresearchprojecthasonlybeenunderwayforthreemonths,soit’toosearlyto_______itssuccess.
持续的adj.c_______________
收入;岁入n.r_______________
