【CET-4：2006.6】Though a skilled worker, ________________________（他被公司解雇了）last week because of the economic crisis.

　　参考答案：he was fired by the company

　　主要考察基本语法知识点即被动语态的用法

　　【CET-6：2007.6】the problem of blacks and women _____(最近几十年受到公众相当大的关注).

　　参考答案：have gained/caused considerable public concern in recent decades.