My favorite toy is a doll. (对画线部分提问)

My favorite toy is a doll. (对画线部分提问)

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It rained all day, I had to stay inside. ( )

It rained all day, I had to stay inside. ( )

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I(名词性物主代词)

I(名词性物主代词)

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下列生物中属于单细胞生物的是

下列生物中属于单细胞生物的是

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