Largequantitiesofinformationaswellassometimelyhelp

問題詳情：

 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

知識點：現在完成時及其被動式

題型：選擇題