来自李虎的问题
They___(plant)treesonthehill.doyousee?
They___(plant)treesonthehill.doyousee?


They___(plant)treesonthehill.doyousee?
They___(plant)treesonthehill.doyousee?
areplanting.
"Doyousee?"表明是现在正在发生的事,用现在进行时态.