16. When President Barack Obama arrived in Viet Nam in July 2016, the former US Presidents Bill Clinton and George W. Bush___________here earlier.

A. had come           B. would come C. come          D. have come

17. In the past several weeks, I have had the_________to interact with a few large extended families.

A. ceremony              B. situation                   C. opportunity                  D. event

18. I think life today is _________ comfortable than it was in the past.

A. a lot more             B. about as        C. more and more             D. the more

19.  “Have you been to Hoi An? I love it.”                      “_____”

A. I don’t either        B. So am I      C. Neither do I          D. I do too.

20. Children feel _______________ to go into the world with the support from their parents.

A.    confident           B. confidently       C. confidence                      D. reluctant

21. As children move toward _______ , they are less likely to ask for advice.

A. independence            B. dependence            C. independent            D. dependent 

22. When you want to relax, you'll have one of the world's_________ cities at your feet, with more than 40% green space and open water to enjoy.

A. greener                 B. greenest            C. mostly green                  D. green mostly