this is a

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this is a

这是一本书.

这是一本书

这是一本书。

这是一本书
复数形式：These are books

这是一本书。

这是书
这是一本书

Is this a book? Yes,this is. This is a man提问( ) is this? This is a love this is a japan This is a this is a This is a book this is a Demo This is a secret This is a story This is a This is a n_____jacket is this a jacket This is a cirde. This is a this is a hat This is a snowmans This is a map____China