what happened yesterday
what happen yesterday
pro:int v adv:tem
what happened yesterday ?
w ʌ t WORD_BOUNDARY h æ p ə n d WORD_BOUNDARY j ɛ s t ɚ d eɪ WORD_BOUNDARY
w h a t WORD_BOUNDARY h a p p e n e d WORD_BOUNDARY y e s t e r d a y WORD_BOUNDARY