In late 19th century, puters changed great deal and were widely used international trade.
A. the; a; the
B. the; the;不填
C. the; a; an
D. the; a; 不填
网友回答
A. the; a; the
B. the; the;不填
C. the; a; an
(答案→)D. the; a; 不填
解析：在序数词前用定冠词the; a great deal为固定短语, 意思为 “大量地”；
international trade表示泛指概念，不用冠词。