yesterday lucy saw the accident _(happen)in the street为什么hap

yesterday lucy saw the accident _(happen)in the street为什么hap 连词成句.happen,an,the,yesterday,in,saw,street,she ,accident.连词成 I saw an accident ___(happen) on the road yesterday. I saw the traffic accident ____(happen)yesterday some of the students saw this accident happen yesterday.happ I saw ____ accident in the street yesterday.A the B an I met Ann (_)accident in the street yesterday A in B for C b 英文 how many __were there in the street when the accident hap is this _______ that you saw in the street yesterday .Is this _____that you saw in the street yesterday? it was ____(please) to see the accident happen yesterday he saw some people ( )in the street.选哪个,为什么