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 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 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 get in the future.A that;what B what;/ C which;that D / ;that
b第一句宾语从句,第二句定语从句省略that

that
因为前有something

B
这句话的意思是说,你不能确定你将来可能得到什么

B