__________ environmental damage is done, it takes many years for the ecosystem(生态系统) to recover.
Care of the soul is a gradual process ______ even the small details of life should be considered.
With his eyes ________ the work attentively, he didn’t know what was happening outside.
The poor woman had not slept all night and was completely _________.
________ they are my neighbors, I don’t know them well.
Who is ______ that is _______ for the terrible mistake?