- They started an investigation to find out what happened._Ðeɪ ˈstɑːr.tɪd æn ɪnˌves.tɪˈɡeɪ.ʃən tu faɪnd ɑːt ˈwʌt ˈhæp.ənd. Zéi startid an invéstiɡéicheun tou faïnd at oueut hapeund.Ils ont lancé une enquête pour découvrir ce qui s’était passé.Ðeɪ ˈstɑːr.tɪd æn ɪnˌves.tɪˈɡeɪ.ʃən tu faɪnd ɑːt ˈwʌt ˈhæp.ənd. Zéi startid an invéstiɡéicheun tou faïnd at oueut hapeund.
They started an investigation to find out what happened.