I am going to look after my young sister tomorrw.改成被动句My young sister( )( )( )( )( )( )by me tomorrowMany people send donations to charities to support their work.Many people support their work( )( )d
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My young sister( is )( going )( to )( be )( looked )( after )by me tomorrow.
Many people support their work( by )( sending )donations to charities.