it is what you do rather than what you say ___ mattes

问题描述:

it is what you do rather than what you say ___ mattes
a that b.what c.which d.this
为什么选A?其他的错在哪?matters有是什么意思?

这里that是和it is ...that构成一个强调句型,matter指的是...才是重要的,值得关注的.