A.over-graze
B.occurs
C.contributes to
D.mining activities

A.with
B.were
C.when
D.started

A.was
B.play
C.making
D.pictures

A.done
B.of
C.species
D.ecological

A.The more
B.we use
C.the more better
D.will become

A.do housewives have to
B.get it done
C.for
D.cleaners

A.have become
B.where
C.watch them
D.roams free

A.Although
B.aware that
C.to
D.them

A.could
B.attend
C.so
D.it

A.not cancelling
B.in spite of
C.extremely
D.in