Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
He is employed in a company which （ ） in paper products. (special)
【正确答案】：SPECIALIZES
【题目解析】：
根据前文which，说明后面是个从句，从句中缺少谓语动词，special的动词形式是specialize，且which 指代的前面的company，为第三人称单数，填specializes。句意：他受雇于一家专门从事纸品生产的公司。