初中英语句子改错,麻烦解释下为什么： I wonder if Tom has been there.

初中英语句子改错,麻烦解释下为什么： I wonder if Tom has been there. 初中英语句子改错,麻烦帮我看下并解释下吗：I wonder if Tom has been there. 初二英语改错练习题1.I wonder if Tom has been here.2.Just at that mome I wonder since when it has been like this,为什么since后的那个句子是用完成 Tom hasn't come back I wonder what has been happened to him. --You know mike has been ill for days.--yes,I wonder if he i mary has been ill in bed for a week,I wonder if she is ( ) b mary has been ill in bed for a week,I wonder if she is () be --You know Mr.Green has been ill for days?--Yes,I wonder if 高中英语:分析句子I wonder if it's because I haven't been able to be i wonder how long has he been away from australia 为什么不是i won I wonder if there is fresh air.