判断题
It is very important to understand buyers’ behavior.
正确
单项选择题 Internationaltradegivesconsumersandcountriestheopportunityto()goodsandservicesnotavailableintheirowncountries.
单项选择题 Afterhavingseenthe()andsamples,Jennymakesthespecificinquiry.
单项选择题 Thepaymentismadebyanirrevocable()letterofcreditinourfavor.