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. which; that
C. /; that
D. what; /
网友回答
A. that; what
(答案→)B. which; that
C. /; that
D. what; /
解析：本题考查连词。句意：你只能确定你现在拥有什么，却不能确定将来可能会得到什么。第一空所填词引导宾语从句，且在从句中作宾语，而that引导名词性从句不担当任何成分，which意为“哪一个”，不符合题意。第二空所填词要引导定语从句，先行词是something用that引导定语从句。