______(6)
A.origin
B.cause
C.source
D.reason

______(8)
A.why
B.where
C.when
D.whereas

________(14)
A.heat
B.heated
C.heating
D.hot

_________(2)
A.clock
B.catch
C.discover
D.went

_________(4)
A.because
B.when
C.late
D.discover

_________(5)
A.when
B.missed
C.ran
D.catch

_________(7)
A.because
B.ran
C.clock
D.late

_________(9)
A.catch
B.ran
C.went
D.late

_________(10)
A.discover
B.catch
C.clock
D.missed

According to the passage, recycling paper does all of the following EXCEPT
A.reduce the need for ink
B.save forests
C.save energy
D.reduce air pollution