Although Mary has a————view of our future, nobody believes in what she said.

Although Mary has a————view of our future, nobody believes in what she said.
16. Although Mary has a ____view of our future, nobody believes in what she said.
A. portable B. primary C. possession D. positive
17. Nobody knows his__for helping us.
A. motivation B. motion C. mood D. moral
18. Both sides agreed to establish a_____zone between the south and north.
A. midst B. mild C. mention D. neutral
19. That is a———— moment for our research. We should be very much careful.
A. critical B. belt C. conscience D. copper
20. The textbook is for the———— students, not for the beginners.
A. observation B. transportation C. advanced D. transfer