When we climbed up to the top of the mountain, we were all __________ ,but we were very happy. 
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A
out of sight
B
out of reach
C
out of breath
D
out of danger
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Paper produced every year is  _______________the world`s production of vehicles.
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A
three times the weight
B
the three times weight
C
as three times heavy as
D
three times as heavier as
 The Olympic Games _____.
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A
is held every four years
B
are held every four years
C
are held every the fourth years
D
are held every the forth years