how smart the children are
how smart the child be
pro:rel adj det:art n cop
how smart the children are ?
h aʊ WORD_BOUNDARY s m ɑː ɹ t WORD_BOUNDARY ð ə WORD_BOUNDARY t̠ʃ ɪ l d ɹ ə n WORD_BOUNDARY ɑː ɹ WORD_BOUNDARY
h o w WORD_BOUNDARY s m a r t WORD_BOUNDARY t h e WORD_BOUNDARY c h i l d r e n WORD_BOUNDARY a r e WORD_BOUNDARY