hold on to do sth 还是hold on to doing sth

hold on to do sth 还是hold on to doing sth hold on to doing sth 还是hold on to do sth hold on to do sth hold on to doing sth ,哪个对 坚持做某事,是hold on to do sth.还是 hold on to doing sth.有何区别? hold on to sth hold up to work on doing sth还是work on to do sth? live on 后接doing sth 还是to do sth? move to do sth还是on doing sth? got an invitation to do sth 还是 on doing sth/in doing sth/of go on to do sth.与go on doing sth. on the way to do sth 还是on the way to doing sth go on doing sth,go on to do sth,continue doing sth,continue