Passage 3　　Certain barriers to foreign trade make selling in the international market a real challenge. Relatively few Americans are fluent in more than one language. (31)______, not all foreign traders speak English. (32)______, English is the second language in many countries, (33)______ is helping to lessen the language barrier. (34)______, an increasing number of Americans are learning a second language.　　Each nation has (35)______ peculiar social customs and business practices, which often serve as a hindrance to international trade. The Latin American Siesta—the long lunch hour (36)______ makes the workday longer—is not common (37)______ other ethnic groups. Many foreigners working in Latin American countries find this custom difficult to observe. For some, driving a car (38)______ the left hand side of the road is confusing. Removing your shoes to enter a residence or religious building is (39)______ unique custom. Strange and exotic foods sometimes create a diet problem for the new comer abroad. On the other hand, the American practice of one-stop shopping in shopping centers is becoming common practice in many foreign countries.　　One common foreign custom that has caused trouble is the “entry fee” or bribe that is often expected (40)______ dealing with foreign governments.