When did the accident ( ) ( ) (发生）?

When did the accident ( ) ( ) (发生）? when did the accident happen When did the car accident happen?(同义句） when did the accident happen?_____a winter morningA:in  when did the accident happen?怎麼回答? --How did the accident happen? How did the accident h__? When did that car accident h________? when did the ____ happen?A.interview B.accident c.flight 听短文，回答问题。 1. When did the accident happen? A. Last Monday. When () the accident ()?A.was,happen B.did;happen C.is;happe 1He __ __ __ /应该/stay at home2.When did the accident __ __ /