be heard后加to do sth还是doing sth

be heard to do sth 还是 be heard doing sth? be accustomed to后面加do sth.还是doing sth? be glad to do sth 还是be glad doing sth be scared to do sth还是be scared doing sth be worth to do sth 还是be worth doing sth heard sb.( ) sth.括号中加"do"还是"doing" think about 后加doing sth.还是 do sth. Attentions must be paid to do sth还是doing sth enjoy加to do sth 还是doing sth enjoy后面加to do sth 还是doing sth live on 后接doing sth 还是to do sth? use sth doing sth还是use sth to do sth