--- How was your report, Sam? --- Not bad, but I need to do better in ______.
Giant pandas will have to live if farmers keep ________ their living areas.
We found impossible to finish the work in such a short time.
Some wild animals are in danger ________ the loss of living areas.
——How old is the baby boy?——He is an ________ boy.
There is ________ sheep eating grass there.
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