it is really hard to say which one is the best.i____(choose)one later.

问题描述:

it is really hard to say which one is the best.i____(choose)one later.
请说明句子的意思和为什么这么做

will choose
很难说哪个是最好的,我等会在选一个为什么是将来时呢后面有个later,稍后决定,故要用将来时