书名：寂天挑战新多益2
页数：p.22 no.14@
题目：June 8-At a press conference on
Monday , Amanda Doolittle , the event
director for the Blackridge Country Fair , ________ that pop sensation Max Avery will be giving a performance on the final night of the fair.
(A) confirming
(B) is confirming
(C) confirmed
(D) was confirmed
为什么答案是C 被动 被确认的意思吗？我的答案是B是说我也不知道be +ving 是什么意思