TheUSfederalgovernmenthasreleased252applicationssofar,...

問題詳情：

 The US federal government has released 252 applications so far, ______ fields including education and health care.

   A. covered                   B. to cover                  C. covering                  D. having covering

【回答】

C

知識點：非謂語動詞

題型：選擇題