几道初中英语题目,速度~~~~很简单滴

几道初中英语题目,速度~~~~很简单滴
1.Jay sang the song _____(beautiful).
2.You must wait for your turn in l______.
3.When Tim saw me ,he w______his hand to me.
4.Yester i was just to go out _____someone telephoned me.
A.when B.while C.as D.that