you are late again.why( )you come early?A.didin't you为什么不行?为什么要用B.not?

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you are late again.why( )you come early?A.didin't you为什么不行?为什么要用B.not?

you are late again.why( )you come early?A.didin't you为什么不行?为什么要用B.not?
you are late again.why( )you come early?A.didin't you为什么不行?为什么要用B.not?

you are late again.why( )you come early?A.didin't you为什么不行?为什么要用B.not?
前后时态一致,why don't you或why not you和前面are一致,主要强调说话人现在的状态