Living in Vietnam today differs greatly from the lifestyle of 100 years ago. People in the past mainly worked (31)………… agriculture whereas today there are significantly less people working in this sector of the economy. These days, (32) , people are more likely to be employed in manufacturing and tourism than in the rice fields. Moreover, Vietnam, which was (33)……………agrarian, is transforming into an entirely different country. While agriculture is still an important component of the Vietnamese economy, other enterprises are (34)……………for an increasing amount of economic activity. However, along with the differences, similarities also exist. The Vietnamese people are as friendly today as they were in the past. This is best exemplified in the way they welcome foreigners to their unique country. The Vietnamese work (35) ………….and happily towards the development of their country. 31. A. on B. in C. for D. by 32. A. in conclusion B. on purpose C. by comparison D. for once 33. A. traditionally B. gradually C. occasionally D. presently 34. A. grasping B. holding C. making up D. accounting 35. A. collectively B. separably C. accordingly D. similarly Giải thích giúp vs ạ