是must doing sth 还是to do sth?

是must doing sth 还是to do sth? Attentions must be paid to do sth还是doing sth must 后面是加to do sth.还是do sth. must 后面是加do sth.还是 to 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? mind doing sth还是 to 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 是mind to do sth还是mind doing sth?