Largequantitiesofinformationaswellassometimelyhelp

问题详情：

 Large quantities of information as well as some timely help ___________ since the organization was built.

       A. has offered           B. had been offered              C. have been offered      D. is offered

【回答】

  C

知识点：现在完成时及其被动式

题型：选择题