题目

You can only be sure of     you have at present; you cannot be sure of something _____ you might get in the future.   A. that; what           B. what; /              C. which; that          D. /; that 答案：B根据课文《可贵的沉默》给句子加标点。啊我真快活这一片沉默给了我多大的享受啊