单选题 He painted his bedroom black. It looks dark and dreary. He should choose a different color.
A. had to choose B. should have chosen
C. must have chosen D. could have been choosing

【正确答案】 B
【答案解析】[解析] 本题考查时态。句意为：他将自己的卧室粉刷成黑色，看上去黑暗且沉闷；他本应选一个不同的颜色。“should/ought to+have+动词过去分词”用来对过去应该做而实际并未做的动作进行评论，含有批评之意。因此，答案为B。