题目

下列物质的转化在给定条件下能实现的是（ ） ① ② ③ ④ A . ①③ B . ①④ C . ②③ D . ②④ 答案：AIt was a pity that the great writer died _________his works unfinished.A．for ??????????? B．with ?????? C．from  ?????? D．of