问题补充:
Although the situation was tough during the economic crisis now things are beginning to .
A. look up
B. keep up
C. set up
D. build up
答案:
(答案→)A. look up
B. keep up
C. set up
D. build up
解析: 考查短语辨析。look up好转,keep up保持,set up建立,build up增强,句意:虽然这种形式在经济危机期间很艰难,但是现在一切开始好转。故选A。