The accident happened ______ an early morning.

The accident happened ______ an early morning. The accident happened ______ a cold winter morning. The accident happened ______ a morning.A\ in B\ on C\ at D\ An accident happened this morning.Three men ___(die)already. The terrible accident happened —— the morning of November29t Tom happened an accident. The car accident happened( )a cold winter morning.填介词 The terrible accident happened in a cold,rainy morning the treffic accident happened on______ A.last morning B. sat The traffic accident wouldnot have happened this morning,but 英语翻译taking the recent accident which happened in yunnanas an ___________?An accident has happened.