嘉兴到重庆动车票查询:是It has been paid还是 It has been paid for?

是It has been paid还是 It has been paid for? 为什么是It has been paid而不是 It has been paid for? 还有一题,-harry should have been warned of it.-后面是so he was 还是 so he has?谢谢 it has been argued 如何翻译？ it has been demonstrated that 的意思？ it has been a while是什么意思？ It has always been because...是强调句型吗?如何翻译和使用?谢谢 翻译句子Nothing has ever been done to it It has been great talking with you这话对不对？ It has been clear to the student player