It is useless to do?doing?
It is useless doing 或to do 有什么区别
it is no useless to do=it is no use doing
i found it useless doing还是to do
but it is useless to do this now that you have become a pris
it is my job doing/ to do?
it is fun to do 还是 doing?
It is an effective method to do还是to doing?
It is an effective approach to do还是to doing?
It is my hobby+ to do还是doing
It is time for doing还是to do
It is adj to do与doing的区别是什么?
it is better 后加to do还是doing