we can't find any excuse__it A don't do B doesn't do C not to do D not do
问题描述：
we can't find any excuse__it A don't do B doesn't do C not to do D not do
答
C not to do
动词不定式的否定形式为not to do
我们找不出不去做它的借口.那B???不是主句,是不用助动词的,所以dones't do是不对的