never doing sth 还是do sth?

never doing sth 还是do sth? use sth doing sth还是use sth to do sth plan+to do sth.还是doing sth.还是 do sth. expect to do sth还是doing sth? have somebody do sth 还是doing sth? after do sth.还是after doing sth. mind doing sth还是 to do sth important do sth 还是,important doing sth before doing sth还是do sth learn+to do sth 还是 doing sth finish to do sth还是doing sth promise doing sth还是to do sth