My brother was later for class this morning because his alarm clock___.Adidn"t go off B hasn"t gone off C doesn"t go off D wasn"t gone off为什么不选B?

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My brother was later for class this morning because his alarm clock___.Adidn
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My brother was later for class this morning because his alarm clock___.Adidn"t go off B hasn"t gone off C doesn"t go off D wasn"t gone off为什么不选B?
My brother was later for class this morning because his alarm clock___.
Adidn"t go off B hasn"t gone off C doesn"t go off D wasn"t gone off
为什么不选B?

My brother was later for class this morning because his alarm clock___.Adidn"t go off B hasn"t gone off C doesn"t go off D wasn"t gone off为什么不选B?
选择A.
这个句子要表达的意思是我哥哥今早迟到了因为他的闹钟没响.
很明显闹钟没响这个动作是过去发生的,所以用过去时,如果用B,就是现在完成时,这个句子就变成他的闹钟还没响,而这个句子本身要强调的是今早(过去的这个时间)他的闹钟没响所以才迟到的,而不是要强调到现在还没响.

可以是When I was eating ,my brother was watching My brother was later for class this morning because his alarm clock___.Adidnt go off B hasnt gone off C doesnt go off D wasnt gone off为什么不选B? He asked me how my brother was.=How____?he asked.A Is your brother B your brother wasC Your brother is D Was your brother my brother was old enough to go to school. My brother was born _____a rainy day on还是in My brother was playing computer games.变否定,疑问, the book (whom) i was taken is my brother's My brother ___(read) many books when I was young. my brother was sick last night,改为同义句 Yesterday was my dad and brother's birthday什么意思 I was eaten cakes by my younger brother. HE WAS TAKEN FOR MY BROTHER 这里为什么加FOR when i was a kid,my brother dropped the bomb My brother was boon ( ) May 7th 1996 It was midnight _____ my brother came homebefore还是until My brother was boon ( May 7th 1996 my brother starts ____when he was only five my brother was always getting into trouble with my parents为什么要用was always getting