International trade gives consumers and countries the opportunity to（） goods andservices not available in their own countries. 

单项选择题Afterhavingseenthe（）andsamples，Jennymakesthespecificinquiry.

单项选择题Thepaymentismadebyanirrevocable（）letterofcreditinourfavor.

A.light
B.bright
C.sight

单项选择题（）youhavesaidisveryimportanttous.

A.What
B.That
C.Whose

单项选择题Ifthecasereachesthecriminallimit，thetaxpayermybeaccused（）criminalresponsibilities.

A.at
B.on
C.of

单项选择题Itdoesinthe（）oftransferofintangibleassetsorimmovableproperty.

A.circumstances
B.operation
C.case