BC绝对错!
如果要用D,那么后半句应该是"why it takes us to do anything well",但原句缺少us,所以不能用why!
选A.代A可以将原句代换成
Perservence is a kind of quality-and that's what perservence takes to do anything well.
BC绝对错!
如果要用D,那么后半句应该是"why it takes us to do anything well",但原句缺少us,所以不能用why!
选A.代A可以将原句代换成
Perservence is a kind of quality-and that's what perservence takes to do anything well.