11. Ha Long Bay is easily one of the most ______________ UNESCO World Heritage Sites in Viet Nam.
A. surprised B. shocking C. breathless D. breathtaking
12. Hue Imperial Citadel is the home of Viet Nam’s last royal dynasty ______________ our country from 1802 to 1945.
A. ruled B. being ruled C. to rule D. which had ruled
13. It was Jack ______________ taught Mai to use the newest app on the phone last week.
A. which B. who C. whom D. when
14. It was ______________ the presentation Nam gave in front of the class.
A. that B. which C. who D. whom
15. It was ______________ that teenagers can earn pocket money.
A. do part-time jobs B. doing part-time jobs
C. in doing part-time jobs D. by doing part-time jobs