改错：Iamabouttoleavewhilethereisaknockonthedoor.
问题详情：改错：Iamabouttoleavewhilethereisaknockonthedoor.________________________________________________________________________【回答】while→when句意：我正要离开的时候，突然传来了敲门声。beabouttodosth.w...
问题详情：改错：Iamabouttoleavewhilethereisaknockonthedoor.________________________________________________________________________【回答】while→when句意：我正要离开的时候，突然传来了敲门声。beabouttodosth.w...