You can only be sure of__you have at present,you cannot be sure of Sth.__you might get in the futurA.that,what B.what,\ C.which,that D.\,that

You can only be sure of__you have at present,you cannot be sure of Sth.__you might get in the futurA.that,what B.what,\ C.which,that D.\,that
You can only be sure of__you have at present,you cannot be sure of Sth.__you might get in the futur
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 Sth.__you might get in the futurA.that,what B.what,\ C.which,that D.\,that
第一空填what,引导宾语从句,因为have后面缺宾语
第二空that、which、不填均可,此处是定语从句
综上,选B

B