Although their new factory building is still under construction, we have already placed order for 200 pairs of shoes.
A. the; an
B. a; an
C. /; an
D. /; /
网友回答
A. the; an
B. a; an
(答案→)C. /; an
D. /; /
解析：本题考查冠词。under construction在建设中。中间无冠词；place an order for sth “订购……”。