yesterday i saw （）uncle at （）Charles's the james'为什么要填这个,这里的's是什么用法?

I saw him_____（play）basketball yesterday I saw Tom_____（cycle）after school yesterday这是两个句子 I saw [你]in the bookstore yesterday I saw her dance yesterday变被动 i saw him yesterday改为否定句 I saw an i___ talk show yesterday. I saw you singing yesterday与I saw you were singsing yesterday 有什么区别? Yesterday I saw a movie与I saw a movie at yesterday一样的吗? I saw him yesterday afternoon=I saw him in the afternoon yesterday吗 I went to（ ）yesterday and I saw lots of book there.( L ) I saw them______(quarrel) yesterday afternoon.I saw them______(quarrel)this timeI saw them______(quarrel)this time yesterday afternoon. She ____（write）a letter when I saw her yesterday i know the middle -aged woman____ i saw yesterday. the boy i saw yesterday;i saw the boy yesterday;this is the boy i saw yesterday三句话的翻译,区别? I saw saw saw 英文歌i miss you 歌词开头为saw you yesterday I saw him yesterday afternoonA playing soccerB play soccer zoo elephants I in the yesterday saw .连词成句 I saw a film yesterday evening( 变为同义句)