【题目】He suggested that the problems ______ paid special attention to.
A. referred to being B. refer to being C. referred to be D. referring to be
在线课程【答案】C
【解析】
考查非谓语动词、语态和虚拟语气。句意：他建议应该要对涉及到的问题给予重视。分析句子可知，宾语从句中的谓语动词是paid，故空格处用非谓语，根据与逻辑主语problems是被动关系，故用过去分词referred to；主句的谓语动词是suggested，表示“建议”，其后面的宾语从句用should do，should可以省略，与主语problems是被动关系，用被动语态，故选C。