＿Thursday evening ,i often play the piano.＿There are hundreds＿in the bookcase.

＿On Thursday evening ,i often play the piano.具体某一天,用on
＿There are hundreds of＿in the bookcase.of hundreds of 成千上百
Simon＿swims＿(swim)every week.swims 一般现在时Simon＿(go)＿(swim)every week.你只把go给变了形式，那swim呢？后来改了，是swims嘿，go呢?刚才不是改了吗，怎么又改成swim了请问原题中有go吗有啊。Simon＿(go)＿(swim)every week.那就是 goes to swim