Economy is booming so it is hard for some of the firms to enough labor though their wo

问题补充：

Economy is booming, so it is hard for some of the firms to enough labor , though their working conditions are rather good.

A. hire

B. fire

C. use

D. recommend

答案：

(答案→)A. hire

B. fire

C. use

D. recommend

解析：动词辨析。A雇佣；B解雇；C使用；D推荐；结合句意可知A正确。句意：经济正在迅猛发展，所以尽管他们的工作条件相当好，对一些公司来说雇佣到足够的工人也很困难。