It was necessary to the factory building as the pany was doing more and more business.
A. extend
B. increase
C. lengthen
D. magnify
网友回答
(答案→)A. extend
B. increase
C. lengthen
D. magnify
解析：本题中extend意为“扩大”。lengthen拉长,延长。magnify放大。 Spread vi. 传播；vt.展开；He spread butter on the toast.(他在烤面包上涂上奶油。)