读者:您好,我是英语沙龙的读者,我有一些问题想要向您请教。①The projeet,______by the end of 2000,willexpand the city’s telephone network to cover 1,000,000users.A.being accomplished B.accomplishedC.to be accomplished D.having been accomplished这道题目是不是现在分词作状语?我向一个同学请教,他说选项部分因为修饰 project,所以就用 having。我不太能够理解他的这种说法,您能给我解释一下吗?