改错题70.For many employees, the heavy burden of work means holidays last several days are a rare and hard-won occurrence.
【正确答案】
C
【答案解析】这句话的意思是：对于许多员工而言，沉重的工作负担意味着持续数天的假期是罕见且来之不易的事。主句的主语为the heavy burden of work，谓语动词为means。means后面跟了一个宾语从句，宾语从句的主语为holidays，因此谓语为are，lasting several days为现在分词短语作定语修饰holidays，答案为C。