My sister is young.She can't look after herself.合并成一句 1.My sister is young.She can't look after herself.合并成一句My sisiter is to look after herself.2.He bagan to learn the piano when he was 7.改为同义句He bagan to

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Mysisterisyoung.Shecan''tlookafterherself.合并成一句1.Mysisterisyoung.Shecan''tlookafterherself.合并成一句Mysisi

My sister is young.She can't look after herself.合并成一句 1.My sister is young.She can't look after herself.合并成一句My sisiter is ____ ____ ____ to look after herself.2.He bagan to learn the piano when he was 7.改为同义句He bagan to
My sister is young.She can't look after herself.合并成一句
1.My sister is young.She can't look after herself.合并成一句
My sisiter is ____ ____ ____ to look after herself.
2.He bagan to learn the piano when he was 7.改为同义句
He bagan to learn the piano ____ ____ ____ ____ seven.
第一题有3个空啊。别回答2个单词。