42. ______ take off your shoes before entering the house. A. It’s not necessary B. You’re not allowed C. You shouldn’t D. It is obliged to 43. Worshipping the God and Goddess of nature is one of the most important parts of Vietnamese_____. A. tradition B. traditional C. traditionalism D. traditionalist 44. The Vietnamese don’t have the habit of using forks and knives. They use chopsticks_____. A. contrast B. instead C. in case D. in terms 45. Our grandparents celebrated their 50th wedding _________ last week. A. anniversary B. ceremony C. reunion D. performance