29. Unless the necessary permits are ______ in advance, construction cannot commence at the site. (A) obtain (B) obtains (C) obtaining (D) obtained

39. How is this passage organized? (A) It describes a problem, explains some of its causes and presents ways to address it. (B) It compares two approaches to introducing technology and evaluates their effectiveness. (C) It describes the development of new technology and predicts its future effects. (D) It presents several examples of technological problems and explains how they were solved.

29. Unless the necessary permits are ______ in advance, construction cannot commence at the site.
(A) obtain
(B) obtains
(C) obtaining
(D) obtained

相關試題

相關試卷

29. Unless the necessary permits are ______ in advance, construction cannot commence at the site.(A) obtain(B) obtains(C) obtaining(D) obtained

相關試題

相關試卷

29. Unless the necessary permits are ______ in advance, construction cannot commence at the site.
(A) obtain
(B) obtains
(C) obtaining
(D) obtained