Is this book is written by Bill Gates 到底是用is还是was 我知道是被动语态

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IsthisbookiswrittenbyBillGates到底是用is还是was我知道是被动语态IsthisbookiswrittenbyBillGates到底是用is还是was我知道是被动语态Is

Is this book is written by Bill Gates 到底是用is还是was 我知道是被动语态
Is this book is written by Bill Gates 到底是用is还是was 我知道是被动语态

Is this book is written by Bill Gates 到底是用is还是was 我知道是被动语态
此句应该为:Was this book written by Bill Gates?原句中多了一个is.

was,因为这本书已经完成了,是过去式
Was this book written by Bill Gates?这本书是比尔.盖茨著的吗?