11.Rosy has studied Vietnamese ___________ a year. A. for B. in C. during D. since 12.A: “How do you do?” B: “__________________.” A. Yes. Thank you B. I’m sorry C. You’re welcome D. How do you do? 13.My teacher asked us ___________ to English programs as much as possible. A. to produce B. to make C. to listen D. to work 14.Their parents are always proud of them because they are good children. A. take pride in B. are hopeless C. are happy D. are excited 15.Miss Jackson said Nam should____________ his English pronunciation. A. improve B. do C. make D. speak 16.Tam promises she ____________ her best to study well next semester. A. to try B. try C. will try D. trying 17.HCM Communist Youth Union was officially named __________ December 1976. A. on B. in C. at D. to 18.We ____________ in Ho Chi Minh City for 10 years. A. have visited B. have spoken C. have lived D. have participated 19.Miss Jackson advised Tim to study _____________. A. harder B. hardly C. good D. bad 20.The students have not done these assignments __________ last week. A. for B. in C. at D. since