EXERCISE 11. MARK THE LETTER A, B, C. OR D TO INDICATE THE...

136. There are over fifty ethnic groups but we all use Vietnamese as the official language.A. Although there are over fifty ethnic groups, we all use Vietnamese as the official language. B. Despite there are over fifty ethnic groups, we all use Vietnamese as the official language. C. However, there are over fifty ethnic groups, we all use Vietnamese as the official language. D. In spite of using Vietnamese as the official language, there are over fifty ethnic groups.