第1个回答 2013-03-21
He is learning seriously, careful consideration
以上是我的答案,希望能被采纳
第2个回答 2013-03-21
He is learning seriously, careful consideration
第3个回答 2013-03-21
He is learning seriously, careful consideration
第4个回答 2013-03-21
he is learning seriously, careful consideration
第5个回答 2013-03-21
he studys hard and be careful to think