_____ he was riding ro school,he was hit by a car this morning.A)Until B)Before C)After D)When
问题描述:
_____ he was riding ro school,he was hit by a car this morning.A)Until B)Before C)After D)When
答
D
when...当.时候
今天早上当他骑车去上学的时候,被小车撞了.