if he doesn't do it ,i---- A.don't ,either B.won't,either C.won't.too Ddon't,too

if he doesn't do it ,i---- A.don't ,either B.won't,either C.won't.too Ddon't,too
if he doesn't do it ,i---- A.don't ,either B.won't,either C.won't.too Ddon't,too

if he doesn't do it ,i---- A.don't ,either B.won't,either C.won't.too Ddon't,too
选C,
否定用neither,排除A、B,整个句子表示一个假设意味的,就是事情还没有做,有相对将来的意思