You can only be sure of _ you have at present:you cannot be sure of something _ you might getin the future.A.that;what B.what;/ C.which;that D./;that

You can only be sure of _ you have at present:you cannot be sure of something _ you might getin the future.A.that;what B.what;/ C.which;that D./;that
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

You can only be sure of _ you have at present:you cannot be sure of something _ you might getin the future.A.that;what B.what;/ C.which;that D./;that
of后面要加宾语,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.这里只能用what来代
第二空所填词要引导定语从句,先行词是something,后面宾语从句中that可以省略.

B 第一个句子用what做have 的宾语，拥有什么；
第二个句子是that省略，因为something是复合不定代词，宾语从句中必须用that，但是做宾语的that可以省略。

B
第一个是宾语从句，介词宾语，have后面没有宾语，只能用what连接
第二个是定语从句，that做宾语，可以省略