They have been down long as two hours.

They have been down long as two hours. down 与have been down的区别 they have been handed down through generations among social groups,social classes,etc Where have they been? have been down 和 have down 区别是? They have a____ been there I have been down for two hours.句型转换 I have been down ---- ---- ----. they have pulled down the old building. have been doing,had been doing,will have been down是什么 The children m---- their parents very much when they are alone.T--- of trees have been cut down every day in our city. what have they been doing 是什么时态 What places have they been?怎么翻译? where have they been?是现在完成时吗? they have been in kate's for they have been the subject of debate they have been acting up more lately they have been there before.so have i they have been there before.(),() 改为同义句 We should have been so down well的中文翻译是什么